: 1.21 $2024-03-29T00:21:45-7:0054.196.27.171searchRM Equisetum hyemalephysical specimenEquisetaceaeEquisetumhyemaleL.454James F. Fowler C. L. May and Jon Hak1992524145U.S.A.UtahGarfieldCapitol Reef National Park: Beaver Dam Hanging Garden, Halls Creek Narrows.1238Hanging garden.RM Equisetum hyemalephysical specimenEquisetaceaeEquisetumhyemaleL.677James F. Fowler C. L. May and Jon Hak1992530151U.S.A.UtahWashingtonZion National Park: Kayes Hanging Garden, Zion Canyon.1400Hanging garden.RM Equisetum hyemalephysical specimenEquisetaceaeEquisetumhyemaleL.890James F. Fowler C. L. May and Jon Hak1992611163U.S.A.UtahSan JuanGlen Canyon National Recreation Area: Hook Hanging Garden, Ribbon Canyon.1268Hanging garden.RM Equisetum hyemalephysical specimenEquisetaceaeEquisetumhyemaleL.892James F. Fowler C. L. May and Jon Hak1992611163U.S.A.UtahSan JuanGlen Canyon National Recreation Area: Hook Hanging Garden, Ribbon Canyon.1268Hanging garden.RM Equisetum hyemalephysical specimenEquisetaceaeEquisetumhyemaleL.893James F. Fowler C. L. May and Jon Hak1992611163U.S.A.UtahSan JuanGlen Canyon National Recreation Area: Hook Hanging Garden, Ribbon Canyon.1268Hanging garden.RM Equisetum hyemalephysical specimenEquisetaceaeEquisetumhyemaleL.894James F. Fowler C. L. May and Jon Hak1992611163U.S.A.UtahSan JuanGlen Canyon National Recreation Area: Hook Hanging Garden, Ribbon Canyon.1268Hanging garden.RMRM17777 Equisetum hyemalephysical specimenEquisetaceaeEquisetumhyemaleL.38E. O. Wooton1897619170U.S.A.New MexicoDona AnaMesilla.-106.800132.270291189Phenology: spores.RMRM Equisetum hyemalephysical specimenEquisetaceaeEquisetumhyemaleL.12494Hollis Marriott2005819231U.S.A.South DakotaPenningtonBlack Hills: Mount Rushmore National Memorial: Lafferty Gulch just S of park boundary.1417Westerly-facing lower slope with paper birch, beaked hazel, poison ivy.RMRMRS7 Equisetum hyemalephysical specimenEquisetaceaeEquisetumhyemaleL.s.n.Herbert W. Graham1932826239U.S.A.ArizonaPimaSanta Catalina Mountains: near Summer Haven.-110.75932.4392286Phenology: vegetative only.RMRM698834 Equisetum hyemalephysical specimenEquisetaceaeEquisetumhyemaleL.11851Hollis Marriott Cheryl Mayer200063155U.S.A.South DakotaPenningtonBlack Hills: Black Elk Wilderness, Grizzly Bear Creek just above confluence with drainage from SW corner of Mt. Rushmore Nat. Memorial, ca 1.0 air mi S of The Heads; ca 7.5 air mi SE of Hill City.-103.4643.86541469Along trail, with paper birch and beaked hazel. Phenology: spores.RMRMRS7 Equisetum hyemalephysical specimenEquisetaceaeEquisetumhyemaleL.s.n.Herbert W. Graham1932826239U.S.A.Arizonano countySanta Catalina Mountains: near Summer Haven.2286Phenology: vegetative only.RMRM Equisetum hyemalephysical specimenEquisetaceaeEquisetumhyemaleL.2253Emily Elliott Ken Elliott200774185U.S.A.MontanaParkAbsaroka Range: Gallatin National Forest: along Forest Road 2532, ca 5.5 air mi SE of Livingston.-110.485545.596618592097Stream bank. Phenology: spores.RMRM275363 Equisetum hyemalephysical specimenEquisetaceaeEquisetumhyemaleL.77AElray S. Nixon1964725207U.S.A.NebraskaSheridanMetcalf Public Hunting Grounds, 18 mi N of Hay Springs.1006Moist bottoms; open ridges and Pinus ponderosa forest. Phenology: vegetative only.RMRM35479 Equisetum hyemalephysical specimenEquisetaceaeEquisetumhyemaleL.30J. Kildahl190083215U.S.A.North DakotaTownerMaza.Low ground. Phenology: vegetative only.RMRM Equisetum hyemalephysical specimenEquisetaceaeEquisetumhyemaleL.653Rick McNeill2008624176U.S.A.MontanaMeagherLewis and Clark National Forest: Little Belt Mountains: Forest Road 6393, along Spring Creek, ca 5.3 air mi NE of Checkerboard.-110.444546.69231713Ponderosa woodland; southeast aspect, 20-40% slope; igneous bedrock.RMRM Equisetum hyemalephysical specimenEquisetaceaeEquisetumhyemaleL.1041Rick McNeill2008628180U.S.A.MontanaJudith BasinLewis and Clark National Forest: Little Belt Mountains: junction of Forest roads 266 and 2084, junction of Skunk Gulch and Yogo Creek.-110.45646.92061840Riparian zone and bench above creek; south aspect, 1-10% slope, mixed limestone and shale bedrock. Phenology: vegetative only.RMRM Equisetum hyemalephysical specimenEquisetaceaeEquisetumhyemaleL.2704Rick McNeill2008727209U.S.A.MontanaTetonLewis and Clark National Forest: Front Range: South Fork Teton River, Forest Road 109, ca 3 air mi E of Mill Falls.-112.712947.86761616Riparian zone, at confluence of tributary flowing from the S; Pseudotsuga menziesii/Picea engelmannii; north aspect, 0-10% slope; limestone bedrock, .RMRM Equisetum hyemalephysical specimenEquisetaceaeEquisetumhyemaleL.87270Ronald L. Hartman Rick McNeill2008615167U.S.A.MontanaJudith BasinLewis and Clark National Forest: Big Snowy Mountains: Crystal Lake Road along Big Rock Creek.-109.5146.85141582Creek bottom and adjacent limestone outcrops. Phenology: vegetative only.RMRM Equisetum hyemalephysical specimenEquisetaceaeEquisetumhyemaleL.88148Ronald L. Hartman2008810223U.S.A.MontanaFergusLewis and Clark National Forest: Big Snowy Mountains: Half Moon Canyon.-109.277946.815617291790Canyon narrows with spruce the dominate. Phenology: vegetative only.RMRM Equisetum hyemalephysical specimenEquisetaceaeEquisetumhyemaleL.4977Rick McNeill2009622173U.S.A.MontanaCascadeLewis and Clark National Forest: Little Belt Mountains: Forest Road 67 along Lick Creek, ca 2.5 air mi S of junction with County Road 340.-111.012147.131536Small tributary flowing west into main creek; 10-35% slope; dry hill slope, Pseudotsuga menziesii; granite/shale. Phenology: vegetative only.RMUSFS892322 Equisetum hyemalephysical specimenEquisetaceaeEquisetumhyemaleL.9101Peter J. Ebertowski2011101274U.S.A.ColoradoJacksonRoutt National Forest: Park Range: Sawmill Lake, ca 2 air mi SSW of Grizzly Guard Station, ca 22 air mi SW of Walden.40.534432713Edge of forest near lake. Phenology: spores.RMUSFS852915 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton100David Rosenthal1996725207U.S.A.WyomingParkNorthern Absaroka Area: Shoshone National Forest: along Clocktower Creek, ca 6-7 air mi W of Wapiti.-109.583744.360319512164Stream bottom and adjacent slopes. Phenology: fruiting.RMUSFS855297 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton2905David Rosenthal1997722203U.S.A.WyomingParkNorthern Absaroka Area: Shoshone National Forest: Northern Absaroka Wilderness: up Crandall Trail, ca 36 air mi WNW of Cody.-109.698544.833620122225Stream bottom and slopes. Phenology: spores.RMUSFS855296 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton59732Ronald L. Hartman1997813225U.S.A.WyomingParkNorthern Absaroka Area: Buffalo Bill Reservoir, ca 12 air mi ESE of Wapiti.-109.184144.45011676Lakeside, roadside, and along irrigation canal. Phenology: spores.RMRM912718 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton40923Erwin F. Evert2004714196U.S.A.MontanaMadisonMadison Range: Beaverhead National Forest: along the north side of Indian Creek, 12 mi SE of Cameron, just E of Wonder Ranch.1884On south-facing slope with Acer glabrum, Agropyron spicatum and Cercocarpus ledifolius var. ledifolius. Phenology: flowering & fruiting.RM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton8153Erwin F. Evert198578189U.S.A.WyomingSheridanBig Horn Mountains: just W of Story Fish Hatchery buildlings and ponds.-106.917544.570116521707Under Pinus ponderosa with understory of Acer glabrum and Crataegus columbiana on an east-facing slope with calcareous, clayey soil.RM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton9184Erwin F. Evert198589221U.S.A.WyomingTetonTeton Range: North Fork Teton Creek, ca 1/8-1 mi N of Teton Canyon Campground.-110.911943.762221952378Mixed conifer forest.RMRM726030 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton11164Erwin F. Evert1986819231U.S.A.WyomingParkNorth Fork Shoshone River Drainage: Absaroka Mountains: along small stream, just N of U.S. Hwy 14, 16, and 20, ca 0.5 mi E of the mouth of Canfield Creek.-109.926144.40382027Wet soil along stream bottom.RMRM726452 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton11569Erwin F. Evert1986827239U.S.A.WyomingParkNorth Fork Shoshone River Drainage: Absaroka Mountains: along Eagle Creek, ca 1/4-1/2 mi S of U.S. Hwy 14, 16, and 20.-109.90644.46181981In moist, mossy, spruce-fir forest west of creek.RM726592 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton11727Erwin F. Evert1986829241U.S.A.WyomingParkNorth Fork Shoshone River Drainage: Absaroka Mountains: along north side of North Fork Shoshone River, ca 1/8 mi W of Newton Creek Campground.-109.76544.44731890Disturbed riparian community along river.RM731304 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton12198Erwin F. Evert1987616167U.S.A.WyomingParkAbsaroka Mountains: North Fork Shoshone River Drainage: along Horse Creek, ca 2 mi N of U.S. Hwy 14, 16, and 20.-109.603944.49082042Riparian community with Populus balsamifera, Pseudotsuga menziesii and Rosa woodsii. Phenology: vegetative only.RMRM731582 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton12398Erwin F. Evert1987620171U.S.A.WyomingParkAbsaroka Mountains: North Fork Shoshone River Drainage: along Lost Creek, ca 1-1.5 mi S of U.S. Hwy 14, 16, and 20.-109.543544.432818592012Riparian community along creek with Populus balsamifera, Alnus incana, Equisetum arvense and Pseudotsuga menziesii in dryer areas. Phenology: vegetative only.RMRM732546 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton13746Erwin F. Evert1987814226U.S.A.WyomingParkAbsaroka Mountains: North Fork Shoshone River Drainage: along Sheep Creek, ca 2-3 mi S of U.S. Hwy 14, 16, and 20.-109.785144.432819812012Douglas fir forest with some Engelmann spruce and an understory dominated by Equisetum arvense, Actaea rubra and Orthilia secunda. Phenology: spores.RMRM732597 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton13753Erwin F. Evert1987814226U.S.A.WyomingParkAbsaroka Mountains: North Fork Shoshone River Drainage: along Sheep Creek, ca 2-3 mi S of U.S. Hwy 14, 16, and 20.-109.785144.432819812012Gravel bars in the open. Phenology: spores.RMRM732797 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton14007Erwin F. Evert1987819231U.S.A.WyomingParkAbsaroka Mountains: North Fork Shoshone River Drainage: Fishhawk Meadows, ca 9 mi S of U.S. Hwy 14, 16, and 20.-109.885844.33132347Open, gravelly lodgepole pine forest. Phenology: vegetative only.RMRM752601 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton15636Erwin F. Evert1988729211U.S.A.WyomingParkNorth Fork Shoshone River Drainage: Absaroka Mountains: ca 1/4 mi E of Pahaska along North Fork Shoshone River.-109.966444.50532027Mixed coniferous forest of lodgepole pine, Engelmann spruce, and subalpine fir with an understory of Calamagrostis rubescens, Carex geyeri, and Symphoricarpos albus. Phenology: vegetative only.RMRM752820 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton15810Erwin F. Evert198886219U.S.A.WyomingParkNorth Fork Shoshone River Drainage: Absaroka Mountains: along east side of Goff Creek, ca 1/2 mi N of U.S. Hwy 14, 16, and 20.-109.828944.465832073Riparian/stream edge mostly wet soil dominated by Alnus incana ssp. tenuifolia. Phenology: vegetative only.RMRM751988 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton15826Erwin F. Evert198887220U.S.A.WyomingParkNorth Fork Shoshone River Drainage: Absaroka Mountains: along Moss Creek, ca 1/2 mi N of U.S. Hwy 14, 16, and 20.-109.724744.46181920Moist-wet gravel bar/streamside dominated by Alnus incana ssp. tenuifolia and Salix bebbii. Phenology: flowering & fruiting.RMRM752261 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton16045Erwin F. Evert198888221U.S.A.WyomingParkNorth Fork Shoshone River Drainage: Absaroka Mountains: along Mesa Creek, ca 0.5 mi S of U.S. Hwy 14, 16, and 20.-109.808344.449722073Riparian/streamside, moist-wet soil, prominent species included: Alnus incana ssp. tenuifolia, Cornus stolonifera, Aster hesperius, and Cinna latifolia. Phenology: vegetative only.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton20110Erwin F. Evert199085217U.S.A.MontanaParkAbsaroka-Beartooth Mountains: Gallatin National Forest: along West Fork Mill Creek, ca 21 mi NNE of Gardiner.-110.565745.29961798Moist spruce forest and riparian edge with Equisetum arvense, Carex deweyana and Linnaea borealis.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton20375Erwin F. Evert1990812224U.S.A.MontanaGallatinMadison Range: Gallatin National Forest: along Cascade Creek trail, ca 1.3 mi SW of U.S. Hwy 191, ca 23 mi SSW of Bozeman.-111.238745.39961920Moist spruce forest at streamside with Equisetum arvense, Linnaea borealis, Athyrium filix-femina and Gymnocarpium dryopteris.RM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton20491Erwin F. Evert1991610161U.S.A.MontanaMadisonMadison Range: on the west front along Jack Creek Trail, ca 1/2-3/4 mi E of trail head, ca 10 mi E of Ennis.-111.526145.342117891798Lodgepole pine-Engelmann spruce forest with Actaea rubra, Disporum trachycarpum, Ribes lacustre, Linnaea borealis, and Arnica cordifolia.RM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton20700Erwin F. Evert1991611162U.S.A.MontanaMadisonMadison Range: Gallatin National Forest: along trail on the west side of the South Fork Spanish Creek, ca 22 mi SW of Bozeman.-111.382745.42871859Meadow openings in coniferous forest with Lomatium cous, Dodecatheon conjugens, and Myosotis alpestris.RMRM754897 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton23474Erwin F. Evert199277189U.S.A.IdahoTetonBig Hole Mountains: Targhee National Forest: along south side of South Fork Packsaddle Creek and just N of Forest Road 235; ca 12 mi WNW of Driggs.-106.289846.17252118Meadow opening in coniferous forest with Rudbeckia occidentalis and Phleum pratense. Phenology: spores.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton25897Erwin F. Evert1993710191U.S.A.MontanaSweet GrassBeartooth Mountains: Custer National Forest: along west side of the West Fork Stillwater River, ca 1/2 mi from end of road, ca 12 mi SW of Nye.-109.963345.39952073Lodgepole pine-spruce forest with Astragalus miser var. hylophilus, Vaccinium scopulorum, Hieracium gracile, and Pyrola chlorantha.RMRM781193 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton28213Erwin F. Evert1994720201U.S.A.MontanaSweet GrassBeartooth Mountains: Custer National Forest: along small tributary just S of Picket Pin Creek, ca 10 mi W of Nye.-109.971345.252321492164Mixed coniferous forest with Antennaria racemosa, Vaccinium membranaceum, and Mahonia repens. Phenology: vegetative only.RMRM781886 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton28582Erwin F. Evert1994810222U.S.A.MontanaParkAbsaroka Mountains: Gallatin National Forest: along North Fork of Bear Creek; just N of Jardine.-110.627145.080421032118Disturbed riparian/spruce forest with Aster hesperius, Calamagrostis canadensis, and Orthilia secunda. Phenology: vegetative only.RMRM782666 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton29153Erwin F. Evert1995616167U.S.A.MontanaParkAbsaroka-Beartooth Mountains: Gallatin National Forest: along Balm of Gilead Creek, a tributary of Emigrant Creek, ca 4 mi SE of Emigrant.-110.686645.29961829Riparian community with Streptopus amplexifolius, Cornus sericea, and Equisetum arvense. Phenology: spores.RMRM782728 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton29248Erwin F. Evert1995617168U.S.A.MontanaParkAbsaroka-Beartooth Mountains: Gallatin National Forest: ridge just N of the confluence of Anderson Creek and Mill Creek, ca 17 mi SE of Emigrant.-110.462945.26671981Lodgepole pine forest with Carex geyeri, Arnica cordifolia, and Lonicera utahensis. Phenology: spores.RMRM783700 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton29641Erwin F. Evert1995625176U.S.A.WyomingFremontSoutheastern Absarokas: Shoshone National Forest: along the southeast side of Horse Creek ca 1/3 mi NE of Horse Creek Campground, ca 10 mi N of Dubois.-109.6269443.67582353Riparian/gravel bar community with Juncus balticus, Polemonium pulcherrimum, Equisetum variegatum, and Antennaria corymbosa. Phenology: vegetative only.RMRM783233 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton29990Erwin F. Evert199578189U.S.A.MontanaSweet GrassBeartooth Mountains: Gallatin National Forest: along East Boulder River, ca 4 mi ESE of East Boulder Campground, ca 24 mi S of Big Timber.-110.08745.51611875White spruce forest with Douglas fir and with Oryzopsis asperifolia, Antennaria racemosa, and Arnica cordifolia in the groundlayer. Phenology: vegetative only.RMRM782345 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton30262Erwin F. Evert1995718199U.S.A.MontanaParkAbsaroka Mountains: Gallatin National Forest: along Republic Creek, ca 1/4-1/2 mi S of Cooke City.-109.930445.020523172439Moist spruce-fir forest with Vaccinium scoparium, Arnica cordifolia, Antennaria racemosa, and Smilacina stellata. Phenology: vegetative only.RMRM788169 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton31013Erwin F. Evert1996614166U.S.A.MontanaGallatinGallatin Range foothills: Gallatin National Forest: Sourdough Canyon along east side of Sourdough Creek, 6 mi S of Bozeman.-111.033145.574316341658Riparian community with Cornus sericea, Populus balsamifera, and Acer glabrum. Phenology: vegetative only.RMRM787446 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton31549Erwin F. Evert1996627179U.S.A.MontanaGallatinGallatin Range foothills: Gallatin National Forest: Elkhorn Creek Canyon: ca 1/2-1 mi E of Montana Highway 191, 40 mi N of West Yellowstone.-111.240145.153119812012Spruce-fir forest and openings with Linnaea borealis, Antennaria racemosa, and Vaccinium scoparium. Phenology: vegetative only.RMRM787299 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton31656Erwin F. Evert1996628180U.S.A.MontanaGallatinGallatin Range foothills: Gallatin National Forest: Spire Rock Campground along south side of Squaw Creek, 23 mi SW of Bozeman.-111.197645.44331707Riparian community under Picea glauca with Viola canadensis var. corymbosa, Equisetum arvense, and Linnaea borealis. Phenology: vegetative only.RMRM788425 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton31767Erwin F. Evert1996629181U.S.A.MontanaGallatinMadison Range foothills: Gallatin National Forest: along Hell Roaring Creek, ca 1 mi W of Montana Highway 191, 26 mi SW of Bozeman.-111.238745.428717071737Riparian spruce-fir forest with some lodgepole pine and ground layer of Linnaea borealis and Vaccinium membranaceum. Phenology: vegetative only.RMRM788594 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton32390Erwin F. Evert199685218U.S.A.MontanaCarbonBeartooth Mountains: Custer National Forest: along north side of Slough Lake; 23 mi W of Red Lodge.-109.679445.20612286Wet soil of shore with Gaultheria humifusa and Equisetum arvense. Phenology: spores.RMRM787759 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton32701Erwin F. Evert1996810223U.S.A.MontanaParkAbsaroka Mountains: Gallatin National Forest: along the east side of Bear Creek: ca 1/4 mi below confluence with Darroch Creek, 3 mi NE of Jaradine.-110.606645.10952179Wet spruce forest with Mimulus lewisii, Saxifraga ondontoloma, and Equisetum arvense. Phenology: vegetative only.RMRM819004 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton34255Erwin F. Evert1997729210U.S.A.MontanaGallatinGallatin Range: Gallatin National Forest: along Portal Creek at road crossing, ca 2.5 mi E of U.S. Hwy 191, ca 25 mi SSW of Bozeman.2134Seepage at base of cliffs with Angelica arguta, Arnica amplexicaulis, and Parnassia fimbriata. Phenology: flowering & fruiting.RMRM821302 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton36238Erwin F. Evert199885217U.S.A.MontanaGallatinGallatin Range: Gallatin National Forest: Along west side of Hyalite Creek just north of Langhor Campground, ca 10 m S of Bozeman.1859Wet-moist, open coniferous forest with Salix drummondiana, Calamagrostis canadensis and Platanthera dilatata. Phenology: vegetative only.RMRM822771 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton37074Erwin F. Evert1999717198U.S.A.MontanaMadisonHenrys Lake Mountains: Gallatin National Forest: along Sheep Creek trail, ca 1.5 mi E of the trailhead; ca 2 mi S of Earthquake Lake.-111.406244.80282164Douglas fir-spruce forest with Thalictrum occidentale, Calamagrostis rubescens, and Pedicularis racemosa. Phenology: fruiting.RMRM796516 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton6722Jeanette Flaig2004726208U.S.A.ColoradoMineralEastern San Juan Mountains: Rio Grande National Forest: Deep Creek Trail, Trailhead 806 from Forest Road 528, ca 12 air mi S of Creede.-106.920537.796126752950Spruce forest in canyon with east and west-facing slopes into scattered Douglas fir. Phenology: vegetative only.RMRM796515 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton7450Jeanette Flaig200488221U.S.A.ColoradoHinsdaleEastern San Juan Mountains: San Juan National Forest: Weminuche Wilderness: Pine Creek Trail, Los Pinos River.-107.458437.46972456Open mesic meadow and standing pond side. Phenology: vegetative only.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton58689B. E. Nelson Erin and Michael Foley2003612163U.S.A.ColoradoGrandArapaho National Forest: Rabbit Ears Range: along Cabin Creek, ca 0.5 mi SW of Willow Creek and Colo Hwy 125, ca 9.5 air mi NNE of Hot Sulphur Springs.-106.056340.210525732621Along the creek and adjacent grassy areas. Phenology: fruiting.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton58715B. E. Nelson Erin and Michael Foley2003612163U.S.A.ColoradoGrandArapaho National Forest: Rabbit Ears Range: along Buffalo Creek, ca 1.7 air mi W of Willow Creek and Colo Hwy 125, ca 13 air mi N of Hot Sulphur Springs.-106.102340.255526702792Sandy semi-barren slopes with volcanic cliffs and outcrop, with scattered lodgepole pine and aspen shrubs. Phenology: vegetative only.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton1045Erin Foley Michael Foley2003620171U.S.A.ColoradoGrandArapaho National Forest: Rabbit Ears Range: Willow Creek just S of Colo Hwy 125, ca 9 air mi NE of Hot Sulphur Springs; ca 9 air mi NW of Granby.-106.032640.19625362597Along creek and roadside. Phenology: vegetative only.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton1081bErin Foley Michael Foley2003622173U.S.A.ColoradoGrandArapaho National Forest: Front Range: Fraser River by Idle Wild Campground and U.S. Hwy 40, ca 1.5 air mi NW of Winter Park; ca 3.5 air mi SE of Fraser.-105.643739.82632743Along river, by road, and in spruce/lodgepole pine forest. Phenology: vegetative only.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton2607Erin Foley2003717198U.S.A.ColoradoGrandArapaho National Forest: Williams Fork Mountains: intermittent stream between Henderson Tunnel and Williams Fork, ca 6 air mi SW of Byers Peak, ca 13.5 air mi SW of Winter Park.-105.999139.783827433091Along stream and river in spruce/lodgepole pine forest. Phenology: vegetative only.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton287Erin Foley Michael Foley2003614165U.S.A.ColoradoGrandArapaho National Forest: Front Range: along Meadow Creek, ca 0.3 mi NE of the junction between County roads 84 and 841, ca 4 mi N of Fraser.-105.825140.003525732695Along creek and roadside. Phenology: vegetative only.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton3026Erin Foley2003721202U.S.A.ColoradoGrandArapaho National Forest: Front Range: S of Lake Granby along Doe Creek, ca 6.5 air mi ENE of Granby; ca 15.5 air mi NNW of Fraser.-105.828940.109825852670Along creek and in open meadow. Phenology: vegetative only.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton3172Erin Foley2003721202U.S.A.ColoradoGrandArapaho National Forest: Front Range: Monarch Lake, ca 10.5 air mi E of Granby; ca 12 air mi NE of Fraser.-105.741540.1082560Lakeside, spruce/lodgepole pine/fir forest, and streamside. Phenology: vegetative only.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton367Erin Foley Michael Foley2003614165U.S.A.ColoradoGrandArapaho National Forest: Front Range: St. Louis Campground along St. Louis Creek, ca 3 air mi SW of Fraser.-105.858939.92622682Along creek and in wet areas adjacent to creek. Phenology: vegetative only.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton70Erin Foley B. E. Nelson and Michael Foley2003612163U.S.A.ColoradoGrandArapaho National Forest: Front Range: Rabbit Ears Range: along Cabin Creek, ca 0.5 mi SW of Willow Creek and Colo. Hwy 125, ca 9.5 mi NNE of Hot Sulphur Springs.-106.056340.210525732621Along road and steep rocky slopes of volcanic origin. Phenology: vegetative only.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton813Erin Foley2003619170U.S.A.ColoradoGrandArapaho National Forest: Front Range: along the Colorado River just S of Shadow Mountain Lake, ca 9.5 air mi NE of Granby; ca 4 air mi SSW of Grand Lake.-105.833140.19925362658Along rivers and tributaries, adjacent sagebrush flats, and lodgepole pine slopes. Phenology: vegetative only.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton11193Erin Foley200487220U.S.A.ColoradoGrandMiddle Park: Corral Creek, ca 11 air mi E of Kremmling and ca 4 air mi W of Hot Sulphur Springs.-106.193640.068322832378Along creek and adjacent rocky slopes. Phenology: flowering.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton11320Erin Foley200489222U.S.A.ColoradoGrandArapaho National Forest: Rabbit Ears Range: Willow Creek at the junction of Willow Creek and Buffalo Creek, ca 13.5 air mi NW of Granby and 12.5 air mi NNE of Hot Sulphur Springs; along Colo Hwy 125.-106.073240.24722615Along creek. Phenology: vegetative only.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton5717Erin Foley2004518139U.S.A.ColoradoGrandGore Range: ca 8 air mi SW of Kremmling off County Road 1or Trough Road, ca 8.5 mi S of the junction of County Road 1 and Colo Hwy 9, along the Colorado River.-106.49139.993521462304Along the river. Phenology: vegetative only.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton5926Erin Foley2004521142U.S.A.ColoradoGrandGore Range: Pump House Recreation Area: ca 8 air mi SW of Kremmling and ca 3.5 mi NE of Radium, along Colorado River.-106.50939.98932134Along river. Phenology: vegetative only.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton6310Erin Foley2004528149U.S.A.ColoradoGrandWilliams Fork Mountains: ca 10 air mi SE of Kremmling and ca 24 air mi NW of Silverthorne, ca 2 mi E of Colo Hwy 9 off County Road 381.-106.305739.917124572530Along stream. Phenology: vegetative only.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton6562Erin Foley200461153U.S.A.ColoradoGrandMiddle Park: ca 6 air mi SE of Granby and 4.5 air mi NNW of Fraser, 1 mi S of Behler Creek.-105.836240.038125912804Lodgepole pine forest with opening adjacent to stream. Phenology: flowering & fruiting.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton7358Erin Foley2004610162U.S.A.ColoradoGrandMiddle Park: just S of Hot Sulphur Springs State Wildlife Area and just N of Little Muddy, ca 3.5 air mi SSW of Hot Sulphur Springs and 11 air mi SW of Granby.-106.108940.021824392576Area of water seepage adjacent to aspen grove. Phenology: vegetative only.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton7406Erin Foley Tony Sloan2004612164U.S.A.ColoradoGrandRabbit Ears Range: The Gunsight, 0.5 mi W of Gunsight Pass, ca 11.5 air mi NNE of Kremmling and 14.5 air mi NW of Hot Sulphur Springs.-106.34940.212324632518Moist Douglas fir slope. Phenology: vegetative only.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton8496Erin Foley2004626178U.S.A.ColoradoGrandMiddle Park: Corral Creek, ca 1.5 air mi NNW of Parshall and ca 4 air mi W of Hot Sulphur Springs.-106.185840.077727922878Along creek. Phenology: flowering & fruiting.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton8742Erin Foley2004628180U.S.A.ColoradoGrandRabbit Ears Range: tributary of Willow Creek, ca 9.5 air mi NW of Granby and ca 9.5 air mi SE of Willow Creek Pass.-106.034840.200125602634Along stream and adjacent opening in lodgepole pine forest with scattered spruce and fir. Phenology: vegetative only.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton8934Erin Foley200471183U.S.A.ColoradoGrandMiddle Park: Kinney Creek, ca 3.5 air mi NE of Hot Sulphur Springs and ca 8 air mi WNW of Granby.-106.087240.117525602789Along creek, area heavily trafficked by cattle. Phenology: flowering & fruiting.RM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton927Laura Welp1994621172U.S.A.WyomingFremontGreat Divide Basin Area: Green Mountain: small creek at headwaters of East Cottonwood Creek, ca 10.5 air mi E of Crooks Peak; ca 13.5 air mi W of Three Forks.-107.687542.355324082469Side of creek; dense graminoids and Equisetum dominant, forbs diverse; moist, muddy soil. Phenology: spores.RM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton7304Laura Welp199584216U.S.A.WyomingFremontGreat Divide Basin Area: Green Mountain: East Cottonwood Creek, ca 13 air mi W of Three Forks; ca 13.5 air mi SE of Jeffrey City.-107.687542.369522862378Moist shaded creekside with dense grasses, scattered Populus and pine; thick organic soil. Phenology: fruiting.RM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton49912Ronald L. Hartman1994822234U.S.A.WyomingTeton[location and coordinates withheld]1829Along waterway and upslope. Phenology: fruiting.RM658979 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton51057Ronald L. Hartman1995623174U.S.A.WyomingTetonMount Leidy Highland Area: Lost Creek Road (FS 30340) from Forest boundary upstream 1 air mi.-110.576443.734822252256Lodgepole pine forests and openings. Phenology: spores.RM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton196Emily A. Holt200062154U.S.A.ColoradoEagleCentral Colorado: Sawatch Range, West Slope Continental Divide: Squaw Gulch area, on Forest Road 422 and trail 1897, ca 5.5 air mi SW of Edwards.-106.634539.588524082682Aspen woodland and riparian area. Phenology: vegetative only.RMUSFS400885 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton2045Barnard A. Hendricks1934624175U.S.A.ArizonaGilaTonto National Forest: Sierra Ancha Mountains: Cold Spring.231430% north slope; deep loam, very moist; timber, wirh buttercup and bracken fern; rare. Phenology: vegetative only.RMUSFS400886 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton66Clifford E. Hulbert19213160U.S.A.New MexicoGrantGila National Forest: Dorsey Canyon.-108.3843932.99609185910% southwest slope; deep, moist, gravelly loam; timber; moist places. Phenology: spores.RM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton66663Ronald L. Hartman Emily Holt2000522143U.S.A.ColoradoChaffeeCentral Colorado: Sawatch Range, East Slope Continental Divide: Pass Creek, 3 air mi W of Poncha Springs.-106.142538.502425002530Pinyon-juniper covered slope with irrigation ditch. Phenology: vegetative only.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton7983Emily A. Holt Robert Booth2001817229U.S.A.ColoradoEagleCentral Colorado: Sawatch Range, West Slope Continental Divide: in Basalt-Christine State Wildlife Area, off County Road 104, south side of road along Fryingpan River, ca 2.5 air mi E of Basalt.-106.982239.37242134Palustrine wetland along river and disturbed roadside. Phenology: spores.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton8185Emily A. Holt Sarah Bergemann2001824236U.S.A.ColoradoLakeCentral Colorado: Sawatch Range, East Slope Continental Divide: on Leadville National Fish Hatchery, along trail W from picnic area off Colo Hwy 300, ca 7 air mi SW of Leadville.-106.395139.223729263048Lodgepole near small ponds and streams with Betula and Salix. Phenology: vegetative only.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton51083B. E. Nelson2000720202U.S.A.IdahoValleyPayette National Forest and Vicinity: Long Valley: along the North Fork Payette River at Hartsell Bridge, ca 8.5 air mi SSW of McCall; ca 5 air mi NW of Donnelly.-116.138144.79561481Sandy river bottom with overflow channels and woodland patches. Phenology: vegetative only.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton51375B. E. Nelson2000723205U.S.A.IdahoIdahoPayette National Forest and Vicinity: Salmon River Mountains: Frank Church-River of No Return Wilderness: Moose Jaw Meadow and along Moose Creek below, ca 16 air mi NNE of Big Creek; ca 3 air mi SW of Chamberlain Guard Station.-115.256245.34881844Meadow along the creek. Phenology: buds.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton4515Joy Handley2000530151U.S.A.IdahoAdamsPayette National Forest and Vicinity: West Mountains: along the Weiser River just N of Evergreen, ca 7 air mi SW of New Meadows; ca 14 air mi W of McCall.-116.381644.897411581204Mixed conifer overstory on west-facing river bank and roadside. Phenology: spores.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton5374Joy Handley Denise L. Fairbanks2000615167U.S.A.IdahoValleyPayette National Forest and Vicinity: Long Valley: Ponderosa State Park: N of McCall, ca 10 air mi E of New Meadows.-116.075844.95541524Mixed conifer forest with open meadows and marshes. Phenology: spores.RMRM276038 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton2484C. T. Mason, Jr. C. T. Mason III and W. S. Phillips196469161U.S.A.ArizonaApacheChuska Mountains: Along Tsaile Creek S of Roof Butte.-109.0935936.439792591Meadow. Phenology: spores.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton7267Joy Handley2000723205U.S.A.IdahoIdahoPayette National Forest and Vicinity: Frank Church-River of No Return Wilderness: Chamberlain Creek Trail (Trail 033), ca 1 mi E of Deer Creek to 0.5 mi W of Skull Creek, ca 4-6 air mi E of Chamberlain Guard Station; ca 20 air mi NE of Big Creek Guard St-115.091545.381814631585Trailside in mixed conifer forest. Phenology: buds.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton8103Joy Handley2000815228U.S.A.IdahoValleyPayette National Forest and Vicinity: Salmon River Mountains: Fitsum Creek Trail (Trail 087), along the South Fork Salmon River, ca 20 air mi ENE of McCall; ca 17 air mi S of Warren.-115.708845.013410971158Trailside along west facing river bank in Pinus ponderosa overstory. Phenology: spores.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton2193Joy Handley1999723204U.S.A.IdahoValleyPayette National Forest and Vicinity: Salmon River Montains Area: Lick Creek Road (Forest Road 339) near Lake Fork Guard Station, ca 7 air mi E of McCall; ca 16 air mi ESE of New Meadows.-115.953444.92641615Sedge bog with Carex buxbaumii. Phenology: vegetative only.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton2194Joy Handley1999723204U.S.A.IdahoValleyPayette National Forest and Vicinity: Salmon River Montains Area: Lick Creek Road (Forest Road 339) near Lake Fork Guard Station, ca 7 air mi E of McCall; ca 16 air mi ESE of New Meadows.-115.953444.92641615Sedge bog with Carex buxbaumii. Phenology: vegetative only.RMRM345739 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton2279Charles P. Pase1977928271U.S.A.ArizonaGreenleeApache National Forest: Upper Eagle Creek.-109.485933.430991570Riparian zone; Alnus oblongifolia type. Phenology: spores.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton2346Joy Handley1999724205U.S.A.IdahoValleyPayette National Forest and Vicinity: Frank Church-River of No Return Wilderness: Lick Creek Trail to Lick Lake, ca 2-4 air mi SSE of Big Creek; ca 12-12.5 air mi NE of Yellow Pine.-115.321445.100419512378Streamside. Phenology: vegetative only.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton3087Joy Handley Denise L. Fairbanks199988220U.S.A.IdahoValleyPayette National Forest and Vicinity: Frank Church-River of No Return Wilderness: Big Creek Trail to Beaver Creek Trail, ca 3 air mi NW of Big Creek; ca 17 air mi NW of Yellow Pine.-115.30145.158415541648Mixed conifer/Pseudotsuga menziesii overstory, mostly south-facing slopes/trailside. Phenology: spores.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton3538Joy Handley Denise L. Fairbanks1999814226U.S.A.IdahoAdamsPayette National Forest and Vicinity: West Mountains Area: Frog Pond off Forest Road 199, ca 6 air mi NE of Council; ca 14 air mi S of New Meadows.-116.340544.76631615In beaver pond; boggy soil. Phenology: vegetative only.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton64389Ronald L. Hartman Joy Handley199964155U.S.A.IdahoWashingtonPayette National Forest and Vicinity: Snake River 2-5 mi N of Blakes Junction.-117.20244.4326091109Rocky volcanics, roadsides, and steep slopes with sagebrush and perennial grasses, and riparian areas. Phenology: vegetative only.RM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton17861B. E. Nelson Michelle Nelson198988220U.S.A.ColoradoRouttSierra Madre\Park Range: Park Range: Routt National Forest: In canyon along Rock Creek, ca 16.5 air mi SE of Yampa, ca 4 air mi NNE of McCoy.-106.712239.970721952256Creek banks and low bench.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton5250Neil Snow198986218U.S.A.ColoradoJacksonSierra Madre\Park Range: Park Range: near junction of Forest Roads 600 and 689, ca 0.5 mi N of Big Creek Lake, ca 22 air mi NW of Walden; along South Fork Big Creek.-106.609840.93742713Streamside.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton5250Neil Snow198986218U.S.A.ColoradoJacksonSierra Madre\Park Range: Park Range: near junction of Forest Roads 600 and 689, ca 0.5 mi N of Big Creek Lake, ca 22 air mi NW of Walden; along South Fork Big Creek.-106.612240.93732713Streamside.RMRM646372 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton7616Thomas Cramer Jane T. Kellett1995711192U.S.A.WyomingLincolnSouthern Salt River Range and Vicinity: ca 13.5 air mi N of Cokeville; Sublette Range at Raymond Creek.-111.023142.271951Creek bottom with birch, chokecherry, Cornus, and willow thickets. Phenology: vegetative only.RM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton1178Kevin J. Taylor1997610161U.S.A.ColoradoGunnisonNorthern Gunnison Basin: ca 4 air mi NNE of Almont.-106.804338.718325602835Steep drainage; Douglas fir, juniper, aspen, and Colorado blue spruce. Phenology: vegetative only.RM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton1357Kevin J. Taylor1997613164U.S.A.ColoradoGunnisonNorthern Gunnison Basin: ca 18 air mi W of Gunnison.-107.229838.550626462926Moist aspen, Douglas fir forest. Phenology: flowering.RM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton2106Kevin J. Taylor1997624175U.S.A.ColoradoGunnisonNorthern Gunnison Basin: Fossil Ridge Wilderness: Summerville Creek, ca 7 air mi SW of Taylor Reservoir.-106.674538.747127742926Lodgepole pine, aspen, shrub juniper forest along creek. Phenology: flowering.RM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton888Kevin J. Taylor199762153U.S.A.ColoradoGunnisonNorthern Gunnison Basin: ca 8.5 air mi E of Crawford.-107.452138.719622862378Spruce-fir-aspen forest. Phenology: vegetative only.RM776884 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton10652Kevin J. Taylor1998817229U.S.A.ColoradoGunnison[location and coordinates withheld]2103Along road along creek; cottonwood, willow, and Colorado blue spruce. Phenology: vegetative only.RM776890 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton6152Kevin J. Taylor199868159U.S.A.ColoradoDeltaNorthern Gunnison Basin: along West Fork of Terror Creek, ca 7 air mi NNW of Paonia.-107.638438.96923472439Engelmann spruce/subalpine fir/Douglas-fir forest along creek. Phenology: flowering.RM776889 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton6212Kevin J. Taylor199868159U.S.A.ColoradoGunnisonNorthern Gunnison Basin: ca 4 air mi E of Paonia Reservoir.-107.265938.95432012Aspen forest along creek; Picea pungens, Populus angustifolia, Prunus, Quercus, Amelanchier, Cornus, and Sorbus. Phenology: flowering.RM776888 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton6420Kevin J. Taylor1998611162U.S.A.ColoradoGunnisonNorthern Gunnison Basin: ca 7 air mi NE of Almont.-106.748738.718327742804South-facing slope and along creek; lodgepole pine, Douglas-fir, aspen, Ribes, Lonicera, Prunus, Rosa, and Juniperus communis. Phenology: vegetative only.RM776887 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton6784Kevin J. Taylor1998616167U.S.A.ColoradoGunnisonNorthern Gunnison Basin: ca 3.5 air mi SE of Paonia Reservoir.-107.303138.92521342240South-facing drainage; Acer, Alnus, Colorado blue spruce, and Cornus. Phenology: vegetative only.RM776886 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton7142Kevin J. Taylor1998620171U.S.A.ColoradoGunnisonNorthern Gunnison Basin: near Spring Creek, ca 7.5 air mi WSW of Taylor Reservoir.-106.785838.804728962987Open, steep, southeast-facing slope; lodgepole pine, Sambucus, Ribes, and aspen. Phenology: flowering.RM776885 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton9065Kevin J. Taylor1998724205U.S.A.ColoradoGunnisonNorthern Gunnison Basin: along Middle Quartz Creek, ca 2 air mi E of Pitkin.-106.488338.60683003Lodgepole forest along creek; Salix and Pentaphylloides. Phenology: vegetative only.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton166Gwen Kittel198961152U.S.A.ColoradoLarimerRiparian Plants of the Cache la Poudre River: at bridge below Poudre Falls, ca 41 mi W of Teds Place on Colo Hwy 14.2384Riverbank.RMUSFS400884 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton4303Elbert L. Little Jr.1937620171U.S.A.ArizonaGilaTonto National Forest: Workman Creek near Peterson Ranch.-110.92133.814213410 degree northwest slope; moist loam; pine-fir forest; with Aquilegia and Carex; common. Phenology: vegetative only.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton3909Grace M. Kostel2004716198U.S.A.South DakotaPenningtonBuffalo Gap National Grassland and Vicinity: ca 22 air mi ENE of Hermosa and 1 mi W of Swinehart Hill on Rapid Creek.-102.75666743.920833792On the banks of the creek. Phenology: vegetative only.RMRM946792 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton1457Jill E. Larson2005621172U.S.A.New MexicoTaosCarson National Forest and Vicinity: Yerba Canyon, Forest Trail 61 off NM Hwy 150, ca 10 air mi NE of Arroyo Seco.-105.529636.579425302835Small stream riparian and canyon bottom. Phenology: spores.RMRM946791 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton3806Jill E. Larson200588220U.S.A.New MexicoTaosCarson National Forest and Vicinity: Sangre de Cristo Range: from Forest Road 76, Duran Canyon Campground to Valle de los Romeros via Trail 13, ca 3 air mi E of Tres Ritos.-105.477536.134126522957Small stream riparian area and surrounding spruce forest. Phenology: spores.RMRM946790 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton80453Ronald L. Hartman Jill E. Larson2005517137U.S.A.New MexicoTaosCarson National Forest and Vicinity: Sangre de Cristo Range: Hondo Canyon along Forest Road 606, SE of NM Hwy 68, up Hondo Canyon Creek 0.6 air mi.-105.717536.292522402317Riparian with Populus angustifolia, Salix, Alnus, and Betula. Phenology: spores.RMRM956253 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton10149Jill E. Larson2006811223U.S.A.New MexicoColfaxCarson National Forest and Vicinity: Cimarron Range: Colin Neblett State Wildlife Area: Tolby Creek ca 1.5 air mi S of Cimarron Canyon and U.S. Hwy 64, ca 3 air mi ESE of Eagle Nest, ca 1.5 air mi E of east shore of Eagle Nest Lake.-105.224736.536625912667Canyon bottom with mixed conifers, Salix species, and Alnus tenuifolia; rock outcrops with Saxifraga, Cystopteris, and Sedum integrifolium. Phenology: spores.RMRM956259 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton5030Jill E. Larson2006523143U.S.A.New MexicoRio ArribaCarson National Forest and Vicinity: just N of Ghost Ranch Presbyterian Retreat Center north property line, ca 11 air mi WNW of Abiquiu.-106.456136.344720422210Dripping spring and moist area with decomposed Chinle sandstones and shale, growing in spring riparian area with Equisetum, Epipactis, Juncus and Alnus. Phenology: vegetative only.RMRM956258 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton5595Jill E. Larson Cheryl Archuleta200661152U.S.A.New MexicoTaosCarson National Forest and Vicinity: Picuris Pueblo Indian Reservation: Picuris Canyon, ca 2 1/4 air mi N of Picuris Pueblo.-105.7136.228223702484Riparian area at bottom of canyon with road and old road bed with Salix species, Populus tremuloides, and Alnus. Phenology: vegetative only.RMRM956257 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton5725Jill E. Larson James Lucero200665156U.S.A.New MexicoTaosCarson National Forest and Vicinity: Pueblo de Taos Indian Reservation: Rio Pueblo de Taos and south slopes of Pueblo Canyon, ca 6 air mi E of Taos Pueblo.-105.451336.439523232576Lightly disturbed camping area at end of road with large Pinus ponderosa and riparian area of stream. Phenology: vegetative only.RMRM956256 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton5972Jill E. Larson200666157U.S.A.New MexicoTaosCarson National Forest and Vicinity: Pueblo de Taos Indian Reservation: Gato Canyon Trail towards Pueblo Peak, ca 2 mi NNE of Taos Pueblo.-105.52236.461924082682Riparian area of small creek with Acer glabrum and Alnus tenuifolia and surrounding mixed conifer forest with Pinus ponderosa, Abies concolor, and Pseudotsuga menziesii. Phenology: vegetative only.RMRM956255 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton7386Jill E. Larson James Lucero2006629180U.S.A.New MexicoTaosCarson National Forest and Vicinity: Sangre de Cristo Range: Pueblo de Taos Indian Reservation: Lucero Canyon from footbridge to Martinez Canyon; trail along Rio Lucero, ca 6 air mi E of Arroyo Seco and ca 5 air mi S of Twining.-105.464936.511225302835Moist areas along stream and along trail in canyon bottom. Phenology: vegetative only.RMRM956254 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton8893Jill E. Larson Robert Peters2006722203U.S.A.New MexicoTaosCarson National Forest and Vicinity: Sangre de Cristo Range: Latir Peak Wilderness: along Forest Road 9701A just E of wilderness boundary and Trail 87 along Rito Primero, ca 1 air mi SE of El Rito.-105.548236.795826793201Along stream in mixed-conifer/aspen forest. Phenology: vegetative only.RMRM157906 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton1496J. C. Blumer19061027300U.S.A.ArizonaCochiseChiricahua Mountains: Stephens' Ranch.1737Near spring. Phenology: spores.RMRM937202 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton5594Luanne Lum2002810222U.S.A.WyomingParkBighorn Basin: along County Road 4DT and Wood River N of Brown Creek, ca 18.5 air mi SW of Meeteetse.-109.101443.939421642207Creekside riparian. Phenology: vegetative only.RMRM937201 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton5615Luanne Lum2002810222U.S.A.WyomingParkBighorn Basin: along Forest Road 200 at Wood River, ca 21 air mi SW of Meeteetse.-109.141543.924622462256Riparian and mixed coniferous forest. Phenology: vegetative only.RM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton1314Margarette J. Lyon1993528148U.S.A.ColoradoSan Miguel[location and coordinates withheld]2292Riparian zone on creek and dry bench above, with disturbed soil. Phenology: vegetative only.RM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton1428Margarette J. Lyon1993531151U.S.A.ColoradoSan MiguelSan Miguel and lower Dolores River Drainages: San Miguel River Drainage: Beaver Creek, ca 10 air mi SSE of Norwood.-108.19637.97342469Riparian with Salix spp., spruce and dogwood. Phenology: vegetative only.RM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton1571Margarette J. Lyon199366157U.S.A.ColoradoSan MiguelSan Miguel and lower Dolores River Drainages: San Miguel River Drainage: Deep Creek, ca 6 air mi W of Telluride.-107.92137.958924692560Riparian along the creek and steep west-facing slopes with spruce, aspen and Douglas fir. Phenology: vegetative only.RMRM804380 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton568Cheryl Mayer2005723204U.S.A.South DakotaPenningtonBlack Hills: Mount Rushmore National Memorial: Lafferty Gulch ca 0.1 mi upstream from north park boundary.1439Lush north-trending drainage with moss covered rocks; partial light. Paper birch/beaked hazel forest with white spruce, Athyrium filix-femina; water's edge.RMUSFS851311 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton1424Rob Massatti2005630181U.S.A.WyomingFremontEast Slope Wind River Range and Vicinity: Rennecker Peak and southern slopes, ca 25 air mi SSW of Lander.-108.88642.520128812923Bog-like area surrounding a spring. Phenology: spores.RMUSFS851310 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton4544Rob Massatti2006524144U.S.A.WyomingFremontEast Slope Wind River Range and Vicinity: ca 1 mi SW of Limestone Mountain; ca 4 air mi NW of Miners Delight.-108.737942.566224602667Mixed lodgepole and limber pine forest with sagebrush steppe, granite substrate. Phenology: spores.RMUSFS851309 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton4959Rob Massatti200663154U.S.A.WyomingFremontEast Slope Wind River Range and Vicinity: Pine Creek, Gold Creek and vicinity at forest boundary, ca 5 air mi WNW of South Pass City.-108.886742.492325642621Graminoid and willow dominated drainage. Phenology: vegetative only.RMUSFS851308 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton5705Rob Massatti2006621172U.S.A.WyomingFremontEast Slope Wind River Range and Vicinity: Sawmill Creek near Middle Popo Agie River, ca 5 air mi SW of Lander.-108.794142.755418591908Dry creek drainage dominated by Populus, Cornus, Salix, and Alnus. Phenology: spores.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton1807Melanie Arnett1998716197U.S.A.ColoradoGunnisonSouthern Gunnison Basin: Sawatch Range: along Agate Creek near the Agate Creek Campground, ca 3 air mi NE of Sargents; ca 7.2 air mi W of Chipeta Mountain.-106.389438.430426822804Mixed conifer/aspen riparian. Phenology: vegetative only.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton500Melanie Arnett1998618169U.S.A.ColoradoGunnisonSouthern Gunnison Basin: San Juan Mountains: ca 17.7 air mi NE of Lake City along Cebolla Creek and adjacent west-facing slope; ca 2.5 road mi N of Hinsdale County on County Road 27.-107.046238.179625602646Banks of creek; no willows, only Alnus. Phenology: vegetative only.RMRM74850 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton726Leslie N. Goodding1910822234U.S.A.ArizonaCochiseHuachuca Mountains; Ramsey Canyon.-110.315631.445191707Along the creeks. Phenology: spores.RMRM384823 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton5621June Haines1985820232U.S.A.WyomingFremontGreen Mountains; Cottonwood Campground, along branch of East Cottonwood Creek.-107.688542.3832210Water's edge, at creek. Phenology: spores.RMRM384824 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton7118June Haines Georgia Haines1986830242U.S.A.WyomingFremontSweetwater River, south of bridge across river on Agate Flats Road, ca 9.5 air mi ENE of Jeffrey City.-107.632142.511218841890On an island in the middle of the river. Phenology: spores.RMRM288744 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton1198Robert D. Dorn1970111305U.S.A.WyomingCarbonMedicine Bow National Forest: Stovepipe Gulch SE of Encampment.-106.41941.09042195Stream bank. Moderately abundant. Phenology: spores.RMRM288610 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton1272Robert D. Dorn1971621172U.S.A.WyomingLincolnSnake River Canyon.-110.904543.19671768River bank associated with Equisetum laevigatum; common. Phenology: spores.RMRM288623 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton1343Robert D. Dorn1971718199U.S.A.WyomingFremontNear confluence of Snowshoe Creek and Warm Springs Creek.-109.834743.56432500Stream bank associated with Equisetum variegatum; sparce abundance. Phenology: spores.RM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton3260Lynn Marie Moore1994719200U.S.A.ColoradoDoloresUpper Dolores River Drainage and Adjacent Areas: San Juan National Forest: Coal Creek drainage, ca 4 air mi N of Rico, northwest side of Colo Hwy 145.-107.994337.84292926East facing riparian area along creek and adjacent slopes; Engelmann spruce and Aspen. Phenology: spores.RM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton3878Lynn Marie Moore1994816228U.S.A.ColoradoDoloresUpper Dolores River Drainage and Adjacent Areas: San Juan National Forest: Lower Scotch Creek, Forest Road 550, just off Colo HWY 145; ca 3.5 air mi south of Rico.-107.914437.6426822743Blue spruce, aspen and Douglas-fir forest and riparian area along creek and surrounding canyon. North to south facing. Phenology: vegetative only.RM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton3953Lynn Marie Moore1994816228U.S.A.ColoradoDoloresUpper Dolores River Drainage and Adjacent Areas: San Juan National Forest: Beaver pond along Colo HWY 145, ca 3 air mi N of Rico.-108.023237.72782743Willow thicket surrounding beaver pond and seepage; scattered blue spruce around perimeter of pond. South to southeast facing. Phenology: vegetative only.RM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton8018Lynn Marie Moore1995730211U.S.A.ColoradoDoloresUpper Dolores River Drainage and Adjacent Areas: San Juan National Forest: ca 5 air mi NW of Rico, NW of Dunton Guard Station, south side of Cold Creek Drainage.-108.08637.784927432804Aspen, spruce, snowberry, and Salix on a southeast face. Phenology: vegetative only.RM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton8785Lynn Marie Moore1995819231U.S.A.ColoradoMontezumaUpper Dolores River Drainage and Adjacent Areas: San Juan National Forest: ca 11 air mi NE of Mancos in the Bear Creek Drainage Area, Forest Trail 607.-108.077737.49372804Riparian area along creek, with aspen and spruce forest; north-face. Phenology: vegetative only.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton2370Rachel Newton2005721202U.S.A.WyomingSubletteWetlands and Adjacent Areas: Half-Moon Lake, ca 8 air mi NE of Pinedale.-109.756242.93432227Moist shoreline. Phenology: spores.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton3038Rachel Newton200583215U.S.A.WyomingCarbonWetlands and Adjacent Areas: Morgan Creek, ca 30 air mi NE of Rawlins.-106.923542.16181939Slightly moist banks and flood plains. Phenology: vegetative only.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton3706Rachel Newton2005828240U.S.A.WyomingSubletteWetlands and Adjacent Areas: Boulder Creek, ca 13 air mi E of Pinedale.-109.616242.85722137Dry forested uplands bordering creek. Phenology: vegetative only.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton5304bRachel Newton2006623174U.S.A.WyomingWashakieWetlands and Adjacent Areas: Tensleep Creek, ca 5 air mi NE of Ten Sleep.-107.3773144.065321446Along moist, shaded creek banks. Phenology: spores.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton5528Rachel Newton2006629180U.S.A.WyomingSheridanWetlands and Adjacent Areas: Tongue River, ca 8 air mi SW of Ranchester.-107.3015144.851231198Shaded, moist river bank. Phenology: spores.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton5532Rachel Newton2006629180U.S.A.WyomingSheridanWetlands and Adjacent Areas: Tongue River, ca 8 air mi SW of Ranchester.-107.3015144.851231198Shaded, moist river bank. Phenology: spores.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton6714Rachel Newton James Pray200688220U.S.A.WyomingTetonWetlands and Adjacent Areas: Snake River, ca 4 air mi NW of Jackson.-110.8406943.500821871Moist shores and flood plains of retention pond. Phenology: spores.RMRM771879 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton255Sarah Nunn Ronald L. Hartman2001526146U.S.A.ColoradoLarimerRoosevelt National Forest: Front Range: by Sevenmile Creek at the junction of County Road 69 and Forest Road 225, N of Rustic, ca 26 air mi W of Fort Collins.-105.600440.719622862560Granite hillside with some quartz, south and east facing slopes with occasional ponderosa pine, Rocky Mountain juniper, Ribes, and Purshia, scrubby and dry; creek at bottom of hillside. Phenology: spores.RMRM771877 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton3347Sarah Nunn2001724205U.S.A.ColoradoLarimerRoosevelt National Forest: Medicine Bow Mountains: Old Roach area off Forest Road 200 on Forest Road 206, ca 58 air mi NW of Fort Collins.-106.124640.945426522743Creek edged with Salix. Phenology: vegetative only.RMRM771876 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton3826Sarah Nunn2001731212U.S.A.ColoradoLarimerRoosevelt National Forest: Front Range: off Pennock Pass Road (County Road 44H) along Sheep Creek off Moody Hill Road (Forest Road 513), ca 11 air mi W of Fort Collins.-105.348540.57122042Lush, shaded creekside down north slope with Alnus and Prunus, in the foothills. Phenology: spores.RMRM771882 Equisetum hyemale var. affine hybridphysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton5054Sarah Nunn2001822234U.S.A.ColoradoLarimerRoosevelt National Forest: Front Range: off Pingree Park Road (County Road 44H), Signal Mountain Trailhead area, ca 24 air mi W of Fort Collins.-105.555340.566326522682Creek bottom with Salix, and beaver ponds and meadows. Phenology: vegetative only.RMRM771878 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton618Sarah Nunn200161152U.S.A.ColoradoLarimerRoosevelt National Forest: Front Range: on Young Gulch Trail, S of Colo Hwy 14, S of split of Young Gulch and Prairie Gulch creeks, ca 13 air mi NW of Fort Collins.-105.348740.664620732134Wet creekside with Aquilegia, Fragaria, Ranunculus, and Acer. Phenology: spores.RMRM139130 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton534C. L. Porter193067158U.S.A.WyomingLaramieLaramie Mountains: Pole Creek.2042On the banks. Phenology: vegetative only.RMRM222683 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton5797C. L. Porter R. C. Rollins1951729210U.S.A.WyomingPark9 mi E of Cooke City, Montana, along Clark's Fork.-109.81344.95832134Gravelly banks. Phenology: spores.RMRM263169 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton8291C. L. Porter Marjorie W. Porter1960628180U.S.A.WyomingBig HornBig Horn Range: head of Shell Creek Canyon.-107.539144.57542317Sandy stream bank. Phenology: spores.RMRM263113 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton8393C. L. Porter Marjorie W. Porter1960714196U.S.A.WyomingCrookBear Lodge Range: between Devils Tower and Warren Peak.-104.477944.48921829Occasional in moist gullies. Phenology: vegetative only.RMRM264712 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton8677C. L. Porter Marjorie W. Porter1961624175U.S.A.WyomingAlbanyLaramie Range, Middle Fork of Pole Creek.-105.426341.27192560Openings in Pinus contorta forest. Occasional. *Middle Fork Pole Creek is now Middle Branch Middle Lodgepole Creek* Phenology: spores.RMRM264713 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton8855C. L. Porter Marjorie W. Porter1961819231U.S.A.WyomingLincolnCanyon of the Snake River.-110.961943.18221707Among rocks and sand on river bank. Phenology: spores.RMRM817013 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton1148Brian Reif2003623174U.S.A.New MexicoSandovalSanta Fe National Forest and Vicinity: Jemez Mountains: Cochiti Canyon, 4.3 air mi SSE of Rabbit Mountain. From crossing of Trail 113 SE 1.3 mi in canyon.-106.43656735.779421952524Canyon bottom and riparian. Phenology: vegetative only.RMRM817012 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton1436Brian Reif Ron Hartman and Brian Jacobs2002628179U.S.A.New MexicoLos AlamosSanta Fe National Forest and Vicinity: Jemez Mountains: upper Guaje Canyon, 4 air mi NW of Los Alamos, from Guaje Reservoir W up canyon for 2.1 air mi.-106.34323335.9309524442640Mixed coniferous forest with corkbark fir on drainage slopes. Riparian and marsh in bottom. Phenology: spores.RMRM817011 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton2072aBrian Reif2002711192U.S.A.New MexicoRio ArribaSanta Fe National Forest and Vicinity: Jemez Mountains: Canyon de la Alameda to Rio Gallina, 14 air mi NNE of Gallina. SW for 1 air mi in canyon to Rio Gallina then 0.4 air mi E along river.-106.75198336.41406720422103Steep-walled drainage of mixed conifers. Phenology: spores.RMRM817010 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton3389aBrian Reif200286218U.S.A.New MexicoSanta FeSanta Fe National Forest and Vicinity: Sangre de Cristo Mountains: Dalton Canyon on Forest Road 123 branching W off the Pecos River, 6 air mi NNW of Pecos.-105.741235.671152365Wet to dry meadow and riparian with canyon constricting to the W. Phenology: vegetative only.RMRM817009 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton3628Brian Reif200289221U.S.A.New MexicoSanta FeSanta Fe National Forest and Vicinity: Sangre de Cristo Mountains: Pecos Wilderness: Frijoles Trail 154, W of the 154/150 trail junction and 11 air mi SE of Chimayo. NW on Trail 154 for 0.3 air mi.-105.81926735.90253325602606Riparian and meadow of narrow canyon bottom with mixed conifer/mature aspen overstory. Granitic cliffs. Phenology: spores.RMRM817008 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton3776Brian Reif2002813225U.S.A.New MexicoSan MiguelSanta Fe National Forest and Vicinity: Sangre de Cristo Mountains: Grindstone Spring and Tecolote Creek off Forest Road 291, 16 air mi WNW of Las Vegas. From Forest Road 291 SW 0.5 air mi to Tecolote Creek, at Grindstone Spring 0.2 mi S along creek.-105.4799535.68836725602698Riparian of creek and adjacent meadow in canyon bottom. Phenology: spores.RMRM817007 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton4134Brian Reif2002818230U.S.A.New MexicoSan MiguelSanta Fe National Forest and Vicinity: Sangre de Cristo Mountains: Pecos Wilderness: Panchuela Creek, 3 air mi NNW of Cowles, 0.1 air mi N of Cave Creek junction.-105.67896735.8512526212682Trailside along riparian/meadows of narrow canyon bottom below slopes of mixed conifers and volcanic bluffs. Phenology: spores.RMRM817006 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton4431Brian Reif2002823235U.S.A.New MexicoSanta FeSanta Fe National Forest and Vicinity: Sangre de Cristo Mountains: Santa Fe Municipal Watershed, 7 air mi ENE of Santa Fe, at end of road NE of McClure Reservoir, S 0.4 air mi along Santa Fe River.-105.80506735.71116725002536Narrow, excised riparian corridor of river. Phenology: spores.RMRM817016 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton472Brian Reif2002611162U.S.A.New MexicoSandovalSanta Fe National Forest and Vicinity: Jemez Mountains: Seven Springs Fish Hatchery, 5.5 air mi NW of La Cueva, ENE up Rio Cebolla for 1.1 mi, at NM Hwy 126/Forest Road 314 junction to river.-106.70788335.92651724022426Riparian. Phenology: spores.RMRM817015 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton584Brian Reif2002613164U.S.A.New MexicoSandovalSanta Fe National Forest and Vicinity: Jemez Mountains: Pablo Canyon, 7 air mi SE of Cuba. From Forest Road 20/533 junction E up canyon 0.5 mi along Forest Road 20.-106.86386735.95248324202454Riparian and adjacent open meadows of canyon bottom. Phenology: vegetative only.RMRM817014 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton856Brian Reif2002618169U.S.A.New MexicoRio ArribaSanta Fe National Forest and Vicinity: Jemez Mountains: Rio Gallina, 3 air mi S of Gallina. From Forest Road 14/17 junction S on Forest Road 14 for 0.3 mi to seep.-106.843636.193924082469Riparian and blue spruce in drainage. Phenology: spores.RMRM817002 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton75526Ronald L. Hartman2002629180U.S.A.New MexicoSandovalSanta Fe National Forest and Vicinity: Jemez Mountains: East Fork Jemez River from trailhead, 0.2 air mi W of Las Condras Campground, N and W to Valles Caldera National Preserve fence near highpoint 8612.-106.587535.82763325302560Broad valley with volcanic boulders and rock outcrops on flanks. Phenology: spores.RMRM817001 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton75589Ronald L. Hartman2002712193U.S.A.New MexicoSandovalSanta Fe National Forest and Vicinity: Jemez Mountains: Las Conchas Campground on NM Hwy 4 upstream on East Fork Jemez River to 0.8 mi.-106.52401735.81452579Canyon and streamside. Phenology: spores.RMRM817005 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton7506Brian Reif2003728209U.S.A.New MexicoSanta FeSanta Fe National Forest and Vicinity: Sangre de Cristo Mountains: Rio en Medio Trail 163, 4.5 air mi NE of Tesuque. N35.818 W105.871 at Trail 179 junction W 0.8 air mi on trail to N35.820 W105.885.-105.87135.81822562365Trailside in canyon bottom with riparian, spruce/fir, and some pockets of open meadow; canyon slopes of ponderosa pine. Phenology: spores.RMRM817004 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton7761Brian Reif200381213U.S.A.New MexicoSanta FeSanta Fe National Forest and Vicinity: Sangre de Cristo Mountains: Forest Road 102 through Pacheco Canyon, 5 air mi ENE of Tesque. N35.789 W105.857 E 0.5 air mi to N35.787 W105.848.-105.85735.78925152603Roadside canyon bottom and riparian with Douglas and white fir in drainage; canyon slopes of ponderosa pine. Phenology: spores.RMRM817003 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton8266Brian Reif200389221U.S.A.New MexicoMoraSanta Fe National Forest and Vicinity: Sangre de Cristo Mountains: Pecos Wilderness: Rio Medio Trail 351, 9 air mi WNW of Cowles. N35.9372 W105.6776 at meadow near Trail 155 junction W 0.9 air mi to N35.9400 W105.6935.-105.693535.9428412975Spruce/corkbark fir forest with scattered stands of mature aspen and adjacent riparian of river; canyon constricted to W by granite bluffs. Phenology: spores.RMRM583825 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton1506Walter Fertig1990611162U.S.A.WyomingTetonWest Slope Wind River Range: ca 4.5 air mi SE of Upper Slide Lake.-110.2202843.5730622862378Cottonwood grove on gravelly, sandy soil on north shore of Cottonwood Creek. Phenology: spores.RMRM8698 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton2308Aven Nelson1896712194U.S.A.WyomingSheridanWolf Creek Canyon.-107.261744.775814631615Phenology: vegetative only.RMRM29564 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton7204Aven Nelson1900614165U.S.A.WyomingUintaEvanston.-110.957441.27932057Copse covered banks. Phenology: vegetative only.RMRM79446 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton9641Aven Nelson191211306U.S.A.WyomingAlbanyLaramie Hills.2591Margins of ponds. Phenology: vegetative only.RMRM301934 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton487Barry Hammel1977626177U.S.A.WyomingAlbanyW slope of Jelm Mountain: Pollock Draw.-105.984541.09612469Abundant is spots on slopes leading down to small creek, with aspen, Ribes sp. Phenology: spores.RMRM302201 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton568Barry Hammel1977830242U.S.A.WyomingCarbonMedicine Bow National Forest: Mullen Creek beaver pond area.-106.404741.22532652Abundant along creek. Phenology: spores.RMUSFS400023 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton58Bruce L. Coulter192466158U.S.A.WyomingTetonTeton National Forest: Horsetail Ranger Station yard.-110.496143.63382134Gentle slope; clay loam soil; woodland park with willow and silverberry; wet shady ground; common. Phenology: vegetative only.RMRM32008 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton937Elmer D. Merrill E. N. Wilcox1901719200U.S.A.WyomingTeton20 mi S of Jackson.-110.786243.29931798Phenology: vegetative only.RMRM334679 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton2050Erwin F. Evert1980710192U.S.A.WyomingParkAbsaroka Mountains, North Fork Shoshone River Drainage: across river from Pahaska.-109.966444.50532065Growing in wet soil with Salix, Angelica pinnata and Alopecurus pratensis. Phenology: spores.RMRM622398 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton8153Erwin F. Evert198578189U.S.A.WyomingSheridanBig Horn Mountains: just W of Story Fish Hatchery buildlings and ponds.-106.917544.570116521707Under Pinus ponderosa with understory of Acer glabrum and Crataegus columbiana on an east-facing slope with calcareous; clayey soil. Phenology: vegetative only.RMRM622399 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton9184Erwin F. Evert198589221U.S.A.WyomingTetonTeton Range: North Fork Teton Creek; ca 1/8-1 mi N of Teton Canyon Campground.-110.9119443.7622221952378Mixed conifer forest. Phenology: vegetative only.RMUSFS400024 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. EatonFB-10F. Buchenroth1927630181U.S.A.WyomingTetonTeton National Forest: Cache Creek.-110.707843.442320125% W slope; loam soil; woodland community with alder and actaea; rich, wet soil; swampy place and along creeks; common. Phenology: vegetative only.RMRM268750 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton282Francis X. Jozwik1962814226U.S.A.WyomingNatronaCasper Mountain: Elkhorn Creek, just north of where it crosses the lower loop of the Casper Mountain Road.-106.314942.74432393On the banks of the creek. Phenology: spores.RMRM276005 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton3616Walter S. Phillips1964619171U.S.A.ArizonaNavajoNavajo Indian Reservation: in front of Betatakin Ruin.-110.5362936.686792195Along stream. Phenology: spores.RM710242 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton11184Hollis Marriott1990622173U.S.A.WyomingCrookBlack Hills: Sand Creek at Sand Creek Crossing, ca 9 air mi S of Beulah.-104.102744.40451524Along creek. Phenology: fruiting.RMRM276671 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton189Jay N. Holliday, Jr.1964914258U.S.A.WyomingAlbanyLaramie Range: Medicine Bow National Forest: Pole Mountain District: W of Eagle Rock, along the North Branch Middle Fork Lodgepole Creek.-105.373341.28282500Moist bottomland along the creek; near water seepage on hillside close to stream. Phenology: spores.RMRM211762 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton2201John F. Reed Mildred S. Reed194869161U.S.A.WyomingTetonJackson Hole Wildlife Park: 1/2 mi E along the Snake River.-110.553343.86632057Flood plain. Phenology: vegetative only.RMRM219722 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton2792John F. Reed Mildred S. Reed1950622173U.S.A.WyomingCarbonSouth Brushcreek Picnic Grounds.-106.500241.34022591Moist streamside. Phenology: vegetative only.RMRM220011 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton2905John F. Reed Mildred S. Reed195087219U.S.A.WyomingTetonJackson Hole: along Pilgrim Creek.-110.564943.92422073Cottonwood forest. Phenology: vegetative only.RMRM211664 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton2558John F. Reed Mildred S. Reed194898252U.S.A.WyomingTetonTeton National Forest: Gros Ventre Slide.-110.554743.6382286Phenology: spores.RMRM395416 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton105L. Strack1987710191U.S.A.WyomingCarbonMorgan: North Fork of Cooper Creek.-106.145141.48672621Boggy bank with Pedicularis. Phenology: spores.RMRM276383 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton153bM. N. Aslamy1964722204U.S.A.WyomingAlbanyLaramie Range: Pole Mountain District: Medicine Bow National Forest: W of Eagle Rock.-105.373341.282825002560North-facing slope; dry to moist meadows, and under the trees; common. Phenology: spores.RMRM566303 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton4603Neil Snow1989723204U.S.A.WyomingAlbanyCa 1 3/4 air mi W of Laramie Peak.-105.469542.25542439Along stream. Phenology: vegetative only.RMRM288744 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton1198Robert D. Dorn1970111305U.S.A.WyomingCarbonMedicine Bow National Forest: Stovepipe Gulch SE of Encampment.-106.423841.09612195Stream bank; moderately abundant. Phenology: spores.RMRM288610 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton1272Robert D. Dorn1971621172U.S.A.WyomingLincolnSnake River Canyon.-110.904543.19671768River bank associated with Equisetum laevigatum; common. Phenology: spores.RMRM288623 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton1343Robert D. Dorn1971718199U.S.A.WyomingFremontNear confluence of Snowshoe Creek and Warm Springs Creek.-109.838743.56182500Stream bank associated with Equisetum variegatum; sparce abundance. Phenology: spores.RMRM601183 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton6277Robert D. Dorn1995722203U.S.A.WyomingConverse5 mi SW of Esterbrook.-105.430342.35581920Stream bank with Salix and Prunus. Phenology: vegetative only.RMRM681308 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton8612Robert D. Dorn2000913257U.S.A.WyomingHot SpringsUpper Gooseberry Creek.-109.021243.8952286Bank above stream with Picea and Rubus. Phenology: vegetative only.RMRM396595 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton466Roger L. Williams1987517137U.S.A.WyomingCarbonSierra Madre: North Fork Encampment River, ca 2.5 air mi SW of Encampment.-106.824941.18222286Occasional on moist bank near river. Phenology: spores.RMRM78051 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton367Seymour S. Sharp1913622173U.S.A.WyomingSheridanLittle Goose Canyon.-107.03944.59951493Stream banks. Phenology: vegetative only.RMRM78154 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton367Seymour S. Sharp1913622173U.S.A.WyomingSheridanLittle Goose Canyon.-107.03944.59951493Stream banks. Phenology: vegetative only.RMRM69182 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton598aVie Willits191078189U.S.A.WyomingSheridanJackson Creek.-106.998544.68761280Grassy swampy soil. Phenology: vegetative only.RMRM337883 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton116aWilliam A. Gerhart D. Jones and D. Rizor1981612163U.S.A.WyomingFremontGame and Fish East Fork Winter Range: East Fork Unit: Bear Creek at Game and Fish Headquarters, ca 10.5 air mi NE of Dubois.-109.500143.64822286Growing in gravelly sand to loam in riparian area to south facing hill (1-15%) above creek; dominants include Picea pungens, Betula, aspen, cottonwood, sedge, grass, and forbs. Phenology: vegetative only.RMRM579411 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton13393Walter Fertig1992821234U.S.A.WyomingParkNorthern Absaroka Mountains: Clarks Fork Valley; Swamp Lake, ca 34 air mi NW of Cody.-109.597244.84812009East-facing granite rock outcrop at NE edge of Swamp Lake basin, near highway. Phenology: spores.RMRM346533 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton121William C. Edwards1979630181U.S.A.WyomingLaramieLaramie Mountains: ca 22.5 air mi W of Cheyenne; ca 3.5 air mi NE of Buford.-105.244641.15082301Short grass and open ponderosa pine forest communities with several small streams. Phenology: vegetative only.RMRM288744 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton1198Robert D. Dorn1970111305U.S.A.WyomingCarbonMedicine Bow National Forest: Stovepipe Gulch SE of Encampment.-106.423841.09612195Stream bank; moderately abundant. Phenology: spores.RMRM288610 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton1272Robert D. Dorn1971621172U.S.A.WyomingLincolnSnake River Canyon.-110.904543.19671768River bank associated with Equisetum laevigatum; common. Phenology: spores.RMRM288623 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton1343Robert D. Dorn1971718199U.S.A.WyomingFremontNear confluence of Snowshoe Creek and Warm Springs Creek.-109.838743.56182500Stream bank associated with Equisetum variegatum; sparce abundance. Phenology: spores.RMRM681308 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton8612Robert D. Dorn2000913257U.S.A.WyomingHot SpringsUpper Gooseberry Creek.-109.021243.8952286Bank above stream with Picea and Rubus. Phenology: vegetative only.RMRMRS11 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton2045Barnard A. Hendricks1924624176U.S.A.ArizonaGilaTonto National Forest: Sierra Ancha Mountains; Cold Springs.-110.894333.8261981Phenology: spores.RMRMRS9 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton4218Elbert L. Little1936113308U.S.A.ArizonaGilaTonto National Forest: Rose Creek.-110.982133.84621676Timber; on slope 5 deg north, moist loam soil. Phenology: spores.RMRMRS10 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton4303Elbert L. Little1937620171U.S.A.ArizonaGilaTonto National Forest: Peterson Ranch; Workman Creek.-111.508233.725618292134Phenology: spores.RMRMRS9 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton4218Elbert L. Little Jr.1936113308U.S.A.ArizonaGilaTonto National Forest: Rose Creek.-110.982133.84621676Phenology: spores.RMRM759011 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton49816B. E. Nelson2000620172U.S.A.ColoradoRouttNorth-central Colorado: Elkhead Mountains: along South Fork Slater Creek at the forest boundary, ca 34 air mi NW of Steamboat Springs; ca 26 air mi NNE of Craig.-107.289940.837923472439Along the stream. Phenology: vegetative only.RMRM759010 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton51875B. E. Nelson2000815228U.S.A.ColoradoMoffatNorth-central Colorado: Elkhead Mountains: around Freeman Reservoir and along Little Cottonwood Creek below, ca 18.5 air mi NNE of Craig.-107.422440.76626582670Reservoir shore and adjacent meadows. Phenology: spores.RMRM759009 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton68810Ronald L. Hartman Sarah Nunn2000724206U.S.A.ColoradoJacksonNorth-central Colorado: Park Range: Fryingpan Trail, ca 1 mi W of N-S trail near Shafer Ranch then N to "lake 8985", ca 18 air mi NW of Walden.-106.593240.86472739On floating mat in large kettle lake and plants from adjacent lodgepole forest. Drosera very abundant on floating mat on northeast side. Phenology: vegetative only.RMRM759008 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton68954Ronald L. Hartman Sarah Nunn2000727209U.S.A.ColoradoJacksonNorth-central Colorado: Park Range: trail from Big Creek Lakes S to 1-0 trail mi from Fryinpan Trail, ca 18 air mi NW of Walden.-106.574140.864726212652Trail through lodgepole pine forest. Phenology: spores.RMRM762893 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton73506Ronald L. Hartman200184216U.S.A.ColoradoJacksonNorth-central Colorado: Medicine Bow Mountains: Colorado State Forest State Park: along County Road 8A, 3.1 road mi from County Road 8.-106.171740.85032621Streamside and adjacent redbeds. Phenology: spores.RMRM834544 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton68698B. E. Nelson2006612163U.S.A.WyomingTetonBridger-Teton National Forest: Jackson Hole: along Pacific Creek below Pacific Creek Campground, ca 7.5 air mi NNE of Moran; ca 36 air mi NE of Jackson.-110.446843.93452134Moist meadow with cottonwoods at the base of the bluff. Phenology: vegetative only.RMRM834543 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton68955B. E. Nelson David Scott2006615166U.S.A.WyomingTetonGrand Teton National Park and Vicinity: Jackson Hole: "Wolff Ridge" on the north side of Spread Creek Valley, ca 3.5 air mi SW of Moran; ca 25 air mi NE of Jackson.-110.537743.79212103Base and lower south-facing cobblestone slope. Phenology: spores.RMRM834545 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton242David Scott B. E. Nelson, Nancy Bockino200667158U.S.A.WyomingTetonBridger-Teton National Forest: Jackson Hole: near Triangle X Ranch and forest boundary, ca 6 air mi SW of Moran; ca 7 air mi NW of Moose.-110.551543.75962014Mixed conifer forest adjacent to riparian community. Phenology: spores.RMRM907515 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton86761Ronald L. Hartman2007821233U.S.A.WyomingTetonTarghee National Forest: Ashton Ranger District: Winegar Hole Wilderness: SE of Rock Lake.-110.95844.1211989Wetlands. Phenology: spores.RM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton1372Neil Snow1987723204U.S.A.WyomingTetonSouthwestern Absarokas: Teton Wilderness: ca 12 air mi NE of Moran Junction, near Pacific Creek.-110.363943.98212210Open lodgepole pine forest mixed with fir and spruce.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton4695no collectorU.S.A.South DakotaRMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton4695no collectorU.S.A.South DakotaRMRM99245 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton102A. C. McIntosh1924526147U.S.A.South DakotaLawrenceLittle Elk Canyon.-103.489244.237412591542Along stream. Meade/Lawrence Counties. Phenology: spores.RMRM99245 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton102Arthur C. McIntosh1924526147U.S.A.South DakotaLawrenceLittle Elk Canyon.-103.489244.237412591542Along stream. Lawrence/Meade counties. Phenology: spores.RMUSFS400697 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton639aCharles P. Pase195676188U.S.A.South DakotaLawrenceBlack Hills National Forest: Little Elk Creek at Dalton Picnic Ground.-103.478444.22981341On 2 percent east slope; silty clay soil; wet meadow vegetation type with Glyceria grandis, Carex spp., and Juncus spp. Phenology: spores.RMRM709800 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton185Cheryl Mayer2000831244U.S.A.South DakotaPenningtonBlack Hills: Black Elk Wilderness: along Grizzly Bear Creek S of Mt. Rushmore, ca 7.4 air mi SE of Hill City.-103.458143.86491475White spruce, paper birch, ponderosa pine; along creek. Phenology: spores.RMRM106146 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton551Henry Lee1925715196U.S.A.South DakotaPenningtonSpring Creek, 16 mi W of Rapid City.-103.417443.98971341Near water. Phenology: spores.RMRM110771 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton1202Herman E. Hayward1927621172U.S.A.South DakotaLawrenceWhitewood.-103.662544.416710971524Meso canyon on northwest facing slope; oak, willow, elm association. Mounted with H. Hayward 805. Phenology: vegetative only.RMRM110770 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton2636Herman E. Hayward192784216U.S.A.South DakotaLawrenceBoxelder Creek, 4 mi NW of Nemo.-103.553444.21441487Brookside; willow-birch association. Phenology: vegetative only.RMRM110771 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton805Herman E. Hayward1927613164U.S.A.South DakotaPenningtonRapid City: Rapid Creek Canyon (Dark Canyon).-103.361644.051110481432Oak, willow, and elm association. Mounted with H. Hayward 1202. Phenology: vegetative only.RMRM710177 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton11251Hollis Marriott1990628179U.S.A.South DakotaLawrenceBlack Hills, Black Hills National Forest, Beaver Creek NNE of Tinton near northern National Forest boundary, ca 8 air mi WSW of Spearfish.-104.025644.46991280Rocky dry creek bottom. Phenology: spores.RMRM70135 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton24S. S. Visher1910720201U.S.A.South DakotaHardingLong Pine Hills.-104.039345.62169451067Springy ground. ELEVSTR 3200 3500 f (USGS 7.5')G.Bryson RMH carto. Phenology: spores.RMRM76211 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton2660S. S. Visher191181213U.S.A.South DakotaFall RiverPhenology: vegetative only.RM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton2025B. A. Packer J. Brondum and T. McGowan1997722203U.S.A.WyomingAlbanyLaramie Range: along Arapahoe Creek, ca 15.5 air mi SW of Esterbrook; ca 31 air mi SW of Douglas.-105.469542.226721402201Creekside, mountain meadow, and boulder outcrops. Phenology: spores.RM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton2489B. A. Packer J. Brondum and T. McGowan1997730211U.S.A.WyomingConverse[location and coordinates withheld]17981899Creekside Phenology: spores.RM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton3156B. A. Packer J. Brondum and T. McGowan1997824236U.S.A.WyomingAlbanyLaramie Range: La Bonte Canyon: La Bonte Creek, ca 16 air mi W of Esterbrook.-105.683142.3832189Along creek. Phenology: vegetative only.RMRM542716 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton435E. L. Painter1988519140U.S.A.ColoradoMoffatDinosaur National Monument: ca 3/4 mi downstream of Anderson Hole Campground, on S side of Yampa River.1768On colluvium below Morgan Formation, 40% slope, northwest exposure, with Amelanchier. Phenology: vegetative only.RMUSFS400889 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton190E. R. Ware1932101275U.S.A.ColoradoGarfieldWhite River National Forest: Mitchell Creek.1981Rare, woodland along creek in alluvial loam with Alnus, Betula, Marchantia. Phenology: vegetative only.RMRM151229 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton489bErnest P. Walker1912817230U.S.A.ColoradoSan MiguelNorwood Hill.2134Sandy moist river banks. Phenology: vegetative only.RMUSFS400888 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. EatonL-16George P. Lang1928121336U.S.A.ColoradoRouttRoutt National Forest.216415% slope, swampy ground along creek in deep loam. Phenology: vegetative only.RMUSFS400918 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton102Harry E. Kauffman1913628179U.S.A.Coloradono countyMontezuma National Forest.2743Phenology: vegetative only.RMUSFS400914 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton49Louis P. Rudolph1913811223U.S.A.New MexicoSan MiguelSanta Fe National Forest: Panchuela Forest Station.-105.664135.828292439Black loam; with asters, paintbrush and flax. Phenology: vegetative only.RMRM30006 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton6596P. A. Rydberg F. K. Vreeland1900510130U.S.A.ColoradoEl PasoColorado Springs: South Cheyenne Canyon.548609Phenology: vegetative only.RMRM146836 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton406-WRay J. Davis1934717198U.S.A.ColoradoJacksonWalden.Sand dunes, moist east slope. Phenology: vegetative only.RMRM702865 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton8879Robert D. Dorn200177188U.S.A.ColoradoLas AnimasNorth Fork Purgatoire River: Sangre de Cristo Mountains.-105.09833337.2433332865Stream bank with Cardamine and Pedicularis. Phenology: spores.RMRM296545 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton1780Ronald L. Hartman196855126U.S.A.New MexicoColfaxPhilmont Scout Ranch: near Cimarron; near entrance to Bear Canyon, ca 11 mi W of Cimarron on HWY 64.2195Common along moist stream. Phenology: spores.RMRM296546 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton2613Ronald L. Hartman196885218U.S.A.New MexicoColfaxPhilmont Scout Ranch: near Cimarron; HWY 64 at junction wih Bear Canyon.2225Common of stream bank. Phenology: vegetative only.RMUSFS400887 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton373Stanley A. Mahan1923816228U.S.A.ColoradoSummitLeadville National Forest: North Fork of the Snake River: 3 mi above the Forks.2896Scattering, gentle slope in coarse gravel. Phenology: vegetative only.RM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton28608Ronald L. Hartman Stuart Markow199164155U.S.A.IdahoBonnevilleTarghee National Forest: Snake River Range: Big Elk Creek trailhead adjacent to the YMCA Camp.-111.107243.333217681829Wooded slopes with Populus tremuloides, Picea pungens, Pseudotsuga, Prunus, Amelanchier, and Juniperus with grassy lower slopes dominated by Purshia and Balsamorhiza or Artemisia tridentata and Symphoricarpos with occasional limestone outcrop.RMRM692415 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton28972Ronald L. Hartman Stuart Markow199168159U.S.A.WyomingTetonTarghee National Forest: Teton Range: Moose Creek trail head, ca 5.5 air mi SE of Victor, Idaho.-111.032543.559220422195Lodgepole pine forests with some Douglas fir and open slopes with grass/forb mixtures. Phenology: spores.RM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton1424Stuart Markow B. E. Nelson and Michelle Nelson1991626177U.S.A.IdahoBonnevilleTarghee National Forest: Snake River Range: Along Palisades Creek.-111.200843.400817071951Mostly riparian, dominated by Cornus, Acer, Prunus, and other shrubs.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton478Stuart Markow1991613164U.S.A.WyomingTetonTarghee National Forest: West Slope Snake River Range: Wyo Hwy 22, Burbank Creek, ca 6 air mi SE of Victor, Idaho.-111.033943.53320732103Riparian in coniferous forest with Pseudotsuga, Abies lasiocarpa, Pinus contorta, and Picea engelmannii, understory of Lonicera, Ribes, and Amelanchier.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton6174Stuart Markow1991817229U.S.A.WyomingTetonBridger-Teton National Forest: East Slope Teton Range: N of Teton Village.-110.834743.6051890Roadside and small patch of coniferous forest dominated by Pinus contorta and Abies lasiocarpa with some riparian.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton6389Stuart Markow1991819231U.S.A.WyomingTetonTarghee National Forest: West Slope Teton Range: Game Creek Trail, ca 4 air mi SE of Victor, Idaho.-111.053843.60519512012Coniferous forest, dominated by Picea engelmannii and Abies lasiocarpa with some areas of roadside weeds and riparian.RM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton8329Stuart Markow1992628180U.S.A.IdahoLemhiTarghee National Forest and vicinity: Beaverhead Range: along Willow Creek, ca 1 air mi NW of Nicholia.-113.023944.39842134Riparian, dominated by Salix, Rosa, and Ribes.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton4276B. A. Packer T. McGowan1998715196U.S.A.WyomingConverseLaramie Range: along Blue Nose Creek, ca 18 air mi SW of Douglas.-105.725142.569521952225Along creek. Phenology: spores.RM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton1912James P. Vanderhorst1990824236U.S.A.ColoradoGarfieldFlat Tops/White River Plateau: Grizzly Creek, ca 4 air mi E of Glenwood Springs.-107.249339.571418291890Canyon bottom, with cottonwood, Douglas fir, spruce, and dogwood.RM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton235aJames P. Vanderhorst199066157U.S.A.ColoradoGarfieldFlat Tops/White River Plateau: No Name Creek, ca 3 mi NE of Glenwood Springs.-107.286939.571418291890Bottom of canyon along creek, with Douglas fir, poplar, and thimbleberry.RM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton3544James P. Vanderhorst1991724205U.S.A.ColoradoGarfieldFlat Tops/White River Plateau: East Elk Creek, ca 12 air mi NW of Glenwood Springs.-107.531539.65871981Riparian zone, with cottonwoods, boxelder, Rocky Mountain maple, dogwood, and blue spruce.RM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton24588Ronald L. Hartman James P. Vanderhorst and Walter Fertig1990524144U.S.A.ColoradoGarfieldFlat Tops/White River Plateau: Rifle Mountain Park: East Rifle Creek, 1 air mi S of Community Building; ca 14 air mi NNE of Rifle.-107.682139.716921342149Bottom of limestone canyon, riparian zone with Acer negundo and cliff faces and talus slopes; riparian.RMRM793273 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton3931Beth Ward1996820233U.S.A.WyomingCarbonSouth-central Wyoming: Sierra Madre: northwest slopes of Battle Mountain, ca 3 air mi N of Colorado; ca 18 air mi E of Baggs.21952524Shaded draw. Phenology: vegetative only.RM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton1592Jean Wood1995629180U.S.A.WashingtonStevensWestern Colville National Forest and Vicinity: Dry Creek Ridge, ca 8 air mi W of Chewelah, SW of Dry Creek Road.-117.83348.2866701884Mixed Douglas fir forest with rocky ridge and outcrops; small lake, some parts heavily logged; some open field with wet areas. Phenology: spores.RM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton3109Jean Wood199588220U.S.A.WashingtonStevensWestern Colville National Forest and Vicinity: Little Pend Oreille Wildlife Refuge: McDowell Lake, ca 11 air mi SE of Colville along Rookery Road.-117.681548.4603701731Lake edge and bottom; along source creek; Carex and alders. Phenology: spores.RM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton753Jean Wood199563154U.S.A.WashingtonFerryWestern Colville National Forest and Vicinity: Sanpoil River Drainage: shores of Long Lake, ca 10 air mi SSW of Republic.-118.814648.50321067Marly creek on lakeshore. Phenology: vegetative only.RM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton3960Jean Wood1996520141U.S.A.WashingtonFerryWestern Colville National Forest and Vicinity: Kettle River Campground, ca 0.5 air mi E of Boyds on the west bank of Kettle River.-118.142848.7215402Open ponderosa pine/pinegrass, mixed forest edge, riverbank, seasonally flooded inlets, and rock outcrops. Phenology: vegetative only.RM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton4068Jean Wood1996522143U.S.A.WashingtonStevensWestern Colville National Forest and Vicinity: Snag Cove on west bank of Columbia River, ca 9 air mi N of Kettle Falls.-118.055248.7359396Riverbank, cobble beach, draw-down mud, Carex meadow, and forest edge. Phenology: vegetative only.RM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton4380Jean Wood1996531152U.S.A.WashingtonFerryWestern Colville National Forest and Vicinity: Barstow Flats on Kettle River, ca 1 air mi SSE of Barstow store.-118.142848.7645396Riverbank and sandy flood plain with ponderosa pine; heavily infested with cheatgrass and Poa bulbosa. Phenology: vegetative only.RM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton4523Jean Wood199662154U.S.A.WashingtonStevensWestern Colville National Forest and Vicinity: Little Pend Oreille Wildlife Refuge: Winslow Lake, ca 10 air mi SE of Colville.-117.811448.4748719Lakeside. Phenology: vegetative only.RM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton6303Jean Wood1996723205U.S.A.WashingtonStevensWestern Colville National Forest and Vicinity: Summit Lake and Box Canyon wetlands, ca 3 air mi N of Pierre Lake.-118.142848.9506762Lakeside. Phenology: vegetative only.RM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton6673Jean Wood W. Wagner1996730212U.S.A.WashingtonStevensWestern Colville National Forest and Vicinity: Byers Creek at crossing of Meadow Creek Road, ca 8 air mi W of Ione.-117.617948.7503914Creekside. Phenology: spores.RM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton7022Jean Wood Diane Pavek199683216U.S.A.WashingtonFerryWestern Colville National Forest and Vicinity: headwaters of Barnaby Creek, ca 6 air mi SE of Sherman Pass along Forest Road 2014.-118.40148.53231280Roadside. Phenology: spores.RM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton7622Jean Wood K. Ahlenslager, L. Swartz and J. Nisbet1996813226U.S.A.WashingtonFerryWestern Colville National Forest and Vicinity: Davis Lake, ca 11 air mi NW of Kettle Falls.-118.230448.73591371Lake margins. Phenology: fruiting.RMRM1018397 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton19883B. E. Nelson1990818230U.S.A.WyomingTetonWyoming/Salt River Ranges: Wyoming Range: Willow Creek Drainage: along lower Willow Creek between Sourdough and Sob creeks, ca 3.5-4.5 air mi SE of Hoback Junction, ca 15-16 air mi SSE of Jackson.-110.682543.27141920Fir grove along creek.RMRM1018396 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton20055B. E. Nelson Walter Fertig1990821233U.S.A.WyomingTetonWyoming/Salt River Ranges: Wyoming Range: Palmer Creek Trail, ca 1-1.5 air mi SE of Hoback Junction, ca 12.5 air mi S of Jackson.-110.724743.301121342256Open forested slopes.RMRM1014644 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton24689B. E. Nelson Russ Nelson1992819232U.S.A.WyomingLincolnWyoming/Salt River Ranges: Wyoming Range: along Blind Bull Creek ca 1 air mi E of Greys River Road, ca 19.3 air mi NE of Afton.-110.690642.94392042Grassy overflow channels. Phenology: vegetative only.RMRM1014643 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton31984Ronald L. Hartman Bruce Embury199259130U.S.A.WyomingLincolnWyoming/Salt River Ranges: Salt River Range: "Star Hill" 1 air mi ENE of Afton center; north side of Swift Creek.-110.905642.7319512439Mostly herb community with scattered juniper, some patches of Acer grandidentatum and Douglas fir and area along road; roadside. Phenology: spores.RMRM1014642 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton32058Ronald L. Hartman Bruce Embury199259130U.S.A.WyomingLincolnWyoming/Salt River Ranges: Salt River Range: Along Greys River, 1.5 air mi SE of Alpine Junction.-110.998343.14891743Open stream bench with sagebrush, Balsamorhiza, Symphoricarpos and Amelanchier with Douglas fir, spruce, Betula, aspen, and Prunus along edges. Phenology: spores.RMRM1017800 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton44478Ronald L. Hartman1993819231U.S.A.WyomingLincolnWyoming/Salt River Ranges: Salt River Range: Gap in Absaroka Ridge traversed by Fontenelle Creek.-110.5742.28442317Stream bottom and adjacent slopes in coniferous forest. Phenology: spores.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton14773B. E. Nelson Neil Snow and Diane Parker1987811223U.S.A.WyomingFremontSouthwestern Absarokas: high ridge NW of Bonneville Pass, ca 2.5 air mi NE of Brooks Lake, ca 24 air mi NW of Dubois.-109.961443.77813109Meadow just below treeline.RMRM535204 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton16510B. E. Nelson198887220U.S.A.WyomingParkNorthern Absarokas: along Dead Indian Creek in Sunlight Basin, ca 24 air mi NW of Cody.-109.4119444.74531859Creek banks. Phenology: vegetative only.RMRM349145 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton7133B. E. Nelson Gael Fonken1980814227U.S.A.WyomingWashakieBig Horn Mountains: in Tensleep Canyon near the mouth of Leigh Canyon, ca 7.5 air mi NE of Ten Sleep.-107.3191744.08531615Disturbed areas in canyon bottom. Phenology: vegetative only.RMRM349144 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton7152B. E. Nelson Gael Fonken1980814227U.S.A.WyomingWashakieBig Horn Mountains: near the mouth of Tensleep Canyon, ca 5 air mi NE of Ten Sleep.-107.3586144.070281463In and around overflow areas. Phenology: spores.RMRM349143 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton436Gael Fonken B. E. Nelson1980812225U.S.A.WyomingJohnsonBig Horn Mountains: along North Clear Creek, just W of Hunter Ranger Station, ca 11 air mi WSW of Buffalo.-106.951944.31692240Creekside. Phenology: vegetative only.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton4977Amy J. Roderick Frank Blomquist1998615166U.S.A.WyomingCarbonUpper North Platte and Laramie River Drainages: Seminoe Mountains: School Creek, ca 1.7 air mi NW of Bradley Peak; ca 5.2 air mi E of Ferris townsite.-107.084942.180721952225Spring-fed aspen draw. Phenology: spores.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton5621June Haines1985820232U.S.A.WyomingFremontGranite Mountain Uplift: Green Mountains: Cottonwood Campground along branch of East Cottonwood Creek.-107.687542.38392210Water edge at creek.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton7118June Haines Georgia Haines1986830242U.S.A.WyomingFremontSweetwater River, south of bridge across river on Agate Flats Road, ca 9.5 air mi ENE of Jeffrey City.-107.632142.511218841890On an island in the middle of the river.RMRM396962 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton10930Keith H. Dueholm1980822235U.S.A.WyomingSweetwaterGreen River Basin: north side of Pine Mountain.-108.977841.048926822896Subalpine fir and Engelmann spruce forest on lower slopes, small stream with sedge meadows, grazed openings with sagebrush, and open aspen stands along edge of conifer forest; along creek. Phenology: vegetative only.RMRM396968 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton11072Keith H. Dueholm Ronald L. Hartman1981523143U.S.A.WyomingSweetwaterGreen River Basin: ridges and flats between Richards Gap and Tepee Mountain, and along Red Creek.-109.168641.019721032164Sandy and shaley slopes above deep drainages, rocky bench above, greasewood flats along lower drainage and creek; along drainage. Phenology: vegetative only.RMRM370946 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton11829Keith H. Dueholm1984913257U.S.A.WyomingCrookBlack Hills: Bear Lodge Mountains: along North Redwater Creek, ca 3 air mi W of Farrall, ca 12.5 air mi NNE of Sundance.-104.325844.581941310Bluffs along the creek with paper birch and ponderosa pine. Phenology: vegetative only.RMRM554916 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton1518Robert S. Kirkpatrick Ruth E. B. Kirkpatrick and B. E. Nelson1983726207U.S.A.WyomingParkAbsaroka Mountains: ca 25 air mi SSW of Meeteetse, junction of South Fork Wood River and East Fork of South Fork Wood River.-109.163443.83592500Wet mossy areas in Engelmann spruce and subalpine fir forest. Phenology: spores.RMRM554904 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton1789Robert S. Kirkpatrick Ruth E. B. Kirkpatrick198381213U.S.A.WyomingFremontAbsaroka Mountains: ca 17 air mi N of Dubois, at junction of Horse Creek and Twilight Creek.-109.659443.77782652Rocky creek bottoms. Phenology: vegetative only.RMRM554903 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton2225Robert S. Kirkpatrick1983818230U.S.A.WyomingParkAbsaroka Mountains: ca 25 air mi W of Meeteetse, in the vicinity of the junction of Jack Creek and the Greybull River.-109.343844.10223172560Rocky creek flood plains.RMRM554905 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton3924Robert S. Kirkpatrick Ruth E. B. Kirkpatrick1984714196U.S.A.WyomingFremontAbsaroka Mountains: ca 21 air mi N of Dubois, along the Wiggins Fork of the Wind River, ca 1 mi E of Norton Point.-109.539843.83742500Picea engelmannii and Abies lasiocarpa forest on old river floodplain; moist, closed areas. Phenology: vegetative only.RMRM554906 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton4662Robert S. Kirkpatrick1984721203U.S.A.WyomingFremontAbsaroka Mountains: ca 18 air mi NE of Dubois, along Bear Creek, 2 mi E to SE of Kent Mountain, in the vicinity of Bear Basin.-109.420443.74925602621Riparian, lower montane; sand and gravel bars. Phenology: spores.RMRM554907 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton5276Robert S. Kirkpatrick1984729211U.S.A.WyomingParkAbsaroka Mountains: ca 22 air mi W of Meeteetse, along the North Fork of Pickett Creek.-109.305144.204126822926Riparian, montane - subalpine, with scattered Picea engelmannii; sand and gravel bars. Phenology: spores.RMRM554908 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton6296Robert S. Kirkpatrick Ruth Kirkpatrick and Leslie Demy1984830243U.S.A.WyomingFremontAbsaroka Mountains: ca 24 air mi NNE of Dubois, in the vicinity of the junction of Emerald Creek and Wiggins Fork.-109.519743.86632591Picea engelmannii and Abies lasiocarpa forest. Phenology: vegetative only.RMRM554914 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton682Robert S. Kirkpatrick Ruth E. B. Kirkpatrick198376187U.S.A.WyomingParkAbsaroka Mountains: ca 17 air mi SW of Meeteetse, along the South Fork of Dick Creek.-109.123343.983723172439Spruce and fir forests and adjacent wet areas. Phenology: vegetative only.RMRM554915 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton800aRobert S. Kirkpatrick Ruth E. B. Kirkpatrick198378189U.S.A.WyomingFremontAbsaroka Mountains: ca 16.5 air mi NW of Dubois, along East Fork Du Noir Creek, ca 9 road mi N of U.S. Hwy 26/287.-109.818843.72022286Floodplain and gravel bars along the river (possibly limestone outwash). Phenology: vegetative only.RMRM349142 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton11186Ronald L. Hartman Keith H. Dueholm1980524145U.S.A.WyomingBig HornBig Horn Mountains: Medicine Lodge Canyon: west side of Medicine Lodge Creek.-107.528944.33831524Lower canyon slopes and floor. Phenology: vegetative only.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton5922Heather Bradtke2002617168U.S.A.OregonMorrowUmatilla National Forest and Vicinity: Black Mountain from County Road 678 and Forest Road 30, ca 10 mi S and 12 mi E of Heppner.-119.29222245.2052781548Riparian area under grand fir, Taxus, and Douglas fir in black, organic soil; slope 0-10; aspect south. Phenology: spores.RMRM554909 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton14773Ronald L. Hartman Robert S. and Ruth E. B. Kirkpatrick1983610161U.S.A.WyomingParkAbsaroka Mountains: Boulder Basin Trail, Hunter Creek, and vicinity.-109.5963944.158119512256Vicinity of creek with overstory of birch, cottonwood, willow, douglas fir, and engelmann spruce. Phenology: spores.RMRM554910 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton14904Ronald L. Hartman Robert S. Kirkpatrick1983612163U.S.A.WyomingParkAbsaroka Mountains: Wood River between Brown Mountain and Upper Wood River campgrounds and along Deer Creek.-109.1830643.937822562408River and creek bottoms and adjacent rocky benches and slopes with scattered lodgepole pine, engelmann spruce, and limber pine and big sagebrush. Phenology: spores.RMRM554911 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton15001Ronald L. Hartman Robert S. and Ruth E. B. Kirkpatrick1983614165U.S.A.WyomingFremontAbsaroka Mountains: along Horse Creek, ca 0.5 mi NE of Horse Creek Campground or ca 10 air mi N of Dubois.-109.626943.675823472439Open, grassy limestone outcrops with mixed stands of lodgepole and limber pines and douglas fir, also adjacent river bottoms. Phenology: vegetative only.RMRM554912 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton15085Ronald L. Hartman Robert S. and Ruth E. B. Kirkpatrick1983614165U.S.A.WyomingFremontAbsaroka Mountains: junction of Wiggins Fork and Frontier Creek at Double Cabin Campground.-109.5630643.806942469River flood plains and adjacent rolling grassy slopes and lodgepole pine forest. Phenology: vegetative only.RMRM554913 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton15295Ronald L. Hartman Robert S. and Ruth E. B. Kirkpatrick1983619170U.S.A.WyomingParkAbsaroka Mountains: north end Carter Mountain, headwaters of Carter Creek and upper end of Marquette Creek, ca 16 air mi SW of Cody.-109.2061144.33520732652Spruce-fir forest with lodgepole and limber pine, open sagebrush grassland, and aspen and cottonwood thickets along stream. Phenology: spores.RMRM554917 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton16905Ronald L. Hartman1983817229U.S.A.WyomingFremontAbsaroka Mountains: vicinity of Double Cabin.-109.5422243.8069424392500Meadows and river bottom; stream bottoms. Phenology: spores.RMRM535205 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton21734Ronald L. Hartman1985727208U.S.A.WyomingParkNorthern Absarokas: North Fork Crandall Creek trail, 15-17 trail mi WNW of Crandall Ranger Station.-109.820844.8777823172439Along trail through coniferous forest. Phenology: vegetative only.RMRM583822 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton28413Ronald L. Hartman1990825237U.S.A.WyomingTetonWest Slope Wind River Range: South Fork Fish Creek between Purdy and Hackamore Creeks.-110.120843.573123622378Meadows, gravel bars, and adjacent lodgepole pine forests. Phenology: spores.RMRM583122 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton31346Ronald L. Hartman Jonathan Hughes1991821233U.S.A.WyomingFremontWest Slope Wind River Range: ca 4 air mi NW of Wyo Hwy 28 on road SW and paralleling Sweetwater River canyon.-108.974442.412522862378Granitic/metamorphic canyon slopes and canyon bottom; canyon bottom. Phenology: spores.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton7160aHeather Bradtke2002630181U.S.A.OregonGrantUmatilla National Forest and Vicinity: Desolation Creek, ca 9 mi S and 8 mi E of Dale.-118.77583344.8694441036Riparian area, spruce, grand fir dominant in organic to fine, deep, and powdery soil; slope 0-15; aspect none. Phenology: spores.RMRM583123 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton10694Walter Fertig199184216U.S.A.WyomingSubletteWest Slope Wind River Range: south and east shore of Little Half Moon Lake, 8 air mi ENE of Pinedale.-109.710842.90192317Open, dry, sandy beach. Phenology: spores.RMRM583824 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton2217Walter Fertig1990623174U.S.A.WyomingSubletteWest Slope Wind River Range: New Fork River, ca .3 mi W of spillway of New Fork Lakes Dam, ca 16 air mi NNW of Pinedale.-109.967543.08942378Bank of New Fork River. Phenology: spores.RMRM583823 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton2525Walter Fertig1990625176U.S.A.WyomingSubletteWest Slope Wind River Range: Half Moon Lake, ca 8 air mi NE of Pinedale.-109.750642.931423472408Lakeshore. Phenology: spores.RMRM583124 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton7293Walter Fertig199168159U.S.A.WyomingFremontWest Slope Wind River Range: Acorn Ridge, Sweetwater River, ca 4 air mi NW of Wyo Hwy 28, ca 37 air mi NE of Farson.-108.974442.412523172435Wet, sandy south bank of Sweetwater River in canyon.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton9566Walter Fertig1991717198U.S.A.WyomingSubletteWest Slope Wind River Range: Boulder Creek Canyon, due E of Boulder Lake, ca 14 air mi E of Pinedale.-109.573342.858322562317Closed canopy Douglas fir/lodgepole pine/aspen forest. Soil moist.RMRM601183 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton6277Robert D. Dorn1995722203U.S.A.WyomingConverseCa 5 mi SW of Esterbrook.-105.430342.35581920Stream bank with Salix and Prunus. Phenology: vegetative only.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton9646Heather Bradtke2002725206U.S.A.WashingtonColumbiaUmatilla National Forest and Vicinity: Colony Creek, ca 6 mi S and 17 mi E of Dayton.-117.63722246.23194414931524Brown powdery soil; aspect northwest. Phenology: vegetative only.RMRM633393 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton48694Ronald L. Hartman Tom Cramer1994730211U.S.A.WyomingSubletteGreen River Basin: Boulder Creek, 0.5 air mi NW of Boulder.-109.723342.75722134Streamside, marshy areas, and beneath Populus angustifolia. Phenology: spores.RMRM624568 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton49912Ronald L. Hartman1994822234U.S.A.WyomingTetonGros Ventre Area: confluence of Flat Creek and the Snake River; ca 6 air mi S of Jackson.-110.743543.38531829Along waterway and upslope. Phenology: spores.RMRM633489 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton1708Thomas Cramer Jane T. Kellett199477188U.S.A.WyomingFremontGreen River Basin: West Willow Creek and vicinity, ca 2.5 air mi NW of South Pass City.-108.841942.485624692576Sagebrush hillsides, streamsides, meadows, and granite outcrops. Phenology: spores.RMRM633488 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton2752aThomas Cramer199484216U.S.A.WyomingLincolnGreen River Basin: east end of Fontenelle Gap, ca 15 air mi W of Fontenelle Reservoir.-110.418942.09312134Creekside meadows, willow thickets, and rockslides. Phenology: spores.RMRM642612 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton3133aThomas Cramer199488220U.S.A.WyomingLincolnGreen River Basin: Green River at Slate Creek confluence, ca 1/2 air mi NE of Fontenelle.-110.044241.98831951Riverside beneath shale bluff, surrounding greasewood and rabbitbrush desert. Phenology: spores.RMRM633490 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton616Thomas Cramer1994616167U.S.A.WyomingFremontGreen River Basin: Continental Divide at Sweetwater River and Palmer Draw, ca 10 air mi W of South Pass City.-108.974442.412523172435Streamside, Douglas fir canyonside, sagebrush slopes, and open rocky ridges. Phenology: spores.RMRM637974 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton9424Thomas Cramer Jane T. Kellett1995725206U.S.A.WyomingSubletteGreen River Basin: Irish Canyon at Bridger-Teton National Forest border, ca 5.5 air mi ENE of Big Sandy.-109.392242.67332378Creekside meadows and willows. Phenology: spores.RMRM370946 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton11829B. E. Nelson1984913257U.S.A.WyomingCrookBlack Hills: Bear Lodge Mountains: along North Redwater Creek, ca 3 air mi W of Farrall, ca 12.5 air mi NNE of Sundance.-104.325844.581941310Bluffs along the creek with paper birch and ponderosa pine. Phenology: vegetative only.RMRM710242 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton11184Hollis Marriott1990622173U.S.A.WyomingCrookBlack Hills: Sand Creek at Sand Creek Crossing, ca 9 air mi S of Beulah. /4-104.102744.40451524Along creek. Phenology: fruiting.RMRM370914 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton2496Hollis Marriott1983531151U.S.A.WyomingCrookBlack Hills: Bear Lodge Mountains, North Redwater Creek, ca 7 air mi SW of Aladdin.-104.305344.581941310Stream margin, birch woods. Phenology: spores.RMRM370915 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton2653Hollis Marriott198366157U.S.A.WyomingCrook[location and coordinates withheld]1402Birch woods along creek. Phenology: spores.RMRM370916 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton2691Hollis Marriott198367158U.S.A.WyomingCrook[location and coordinates withheld]1097Deciduous woods along stream. Phenology: vegetative only.RMRM370917 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton3742Hollis Marriott1983628179U.S.A.WyomingCrookBlack Hills: Dugout Gulch ca 5.5 air mi S of Beulah.-104.1027844.46611310Wet meadow (old beaver ponds). Phenology: vegetative only.RMRM370924 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton3761Hollis Marriott1983628179U.S.A.WyomingCrookBlack Hills: Dugout Gulch ca 5.5 air mi S of Beulah.-104.1027844.46611310Wet meadow (old beaver ponds). Phenology: vegetative only.RMRM370918 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton5627Hollis Marriott1983822234U.S.A.WyomingCrookBlack Hills: Bear Lodge Mountains: headwaters of Lame Jones Creek, ca 7 air mi S of Alva.-104.444344.59811493Wet meadows and old beaver ponds. Phenology: vegetative only.RMRM370920 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton8541Hollis Marriott Dennis Horning198484217U.S.A.WyomingWeston[location and coordinates withheld]1768Creek bottom in spruce-pine forest. Phenology: vegetative only.RMRM143737 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton644Marion Ownbey193565156U.S.A.WyomingCrook7 mi NW of Hulett.-104.695944.73771341Moist canyons. Phenology: spores.RMRM370921 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton15999Ronald L. Hartman1983713194U.S.A.WyomingCrookBlack Hills: East Creek, ca 4 air mi SSW of Mona.-104.4086144.770281219Partly wooded drainage with oak, hawthorn, and ash. Phenology: spores.RMRMRS11 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton2045Barnard A. Hendricks1924624176U.S.A.ArizonaGilaTonto National Forest: Sierra Ancha Mountains; Cold Springs.2286Timber; on slope 30 % north; deep loam, very moist soil. Phenology: spores.RMRMRS10 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton4303Elbert L. Little1937620171U.S.A.ArizonaGilaTonto National Forest: Peterson Ranch; Workman Creek.-111.508233.725618292134Pine-fir forest; on slope 10 deg northwest, moist loam soil. Phenology: spores.RMRM828603 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton341Brian Elliott1998527147U.S.A.ColoradoLas AnimasWet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: Culebra Range: San Isabel National Forest boundary on the North Fork Road off Colo Hwy 12; road to Purgatory Campground.-105.074137.24372804Riparian; aspen-oak-Abies. Phenology: vegetative only.RMUSFS884108 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton76611B. E. Nelson2008821234U.S.A.MontanaCarbonPryor Mountains: Custer National Forest: along Stevens Draw below the northwest side of Tie Flat, ca 23.5 air mi ESE of Bridger.-108.459445.1819812103Drier meadows and open slopes along the stream. Phenology: spores.RMRM906189 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton8608Ben Legler200869161U.S.A.New MexicoColfaxVermejo Park Ranch: along Elk Creek on east side of The Wall ca 0.1 mi S of Leandro Creek.-105.18307536.8827482847Rocky, fast flowing stream under Populus tremuloides, Abies, and Picea; adjacent to small andesite cliffs with east exposure. Stems tough, dark green; uncomon under conifers by stream. Photographed. Specimen GPS: 36.882938, -105.18309. Phenology: vegetative only.RMUSFS872320 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton73442B. E. Nelson2007729210U.S.A.MontanaGallatinGallatin Range: Gallatin National Forest: along Portal Creek from the bridge to Forest Road 984 S, ca 6 air mi ENE of interesection of U.S. Hwy 191 and Mont Hwy 64 (Big Sky), ca 27 air mi S of Bozeman.-111.139745.29582158Seep. Phenology: spores.RMUSFS872321 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton73864B. E. Nelson200783215U.S.A.MontanaGallatinGallatin Range: Gallatin National Forest: along Big Bear Creek at crossing of Cliff Creek or Forest Road 6989 ca 1.5 air mi NW of Wheeler Mountain, ca 11.5 air mi SSW of Bozeman.-111.111945.517617861841Open canyon bottom Phenology: vegetative only.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton1309Emily Elliott Brian Elliott200768159U.S.A.MontanaParkAbsaroka Range: Gallatin National Forest: along Forest Road 3280, along East Fork Mill Creek, ca 23.5 air mi S of Livingston.-110.536645.316917072012Steep slopes with mixed conifer forest overstory, mossy mixed forb understory, also talus fields and granite rock outcrops. Phenology: vegetative only.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton2026Emily Elliott2007618169U.S.A.MontanaParkGallatin Range: Gallatin National Forest: along County Road 6507, ca 40 air mi SSW of Livingston; ca 7.5 air mi NW of Gardiner.-110.820145.109816461829Stream banks and roadside in canyon. Phenology: spores.RMUSFS872426 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton2513Emily Elliott Ken Elliott200776187U.S.A.MontanaGallatinGallatin Range: Gallatin National Forest: along Grotto Falls Trail, from trailhead at end of Forest Road 62, ca 17 air mi SSE of Bozeman.-110.962245.447920972219Mixed conifer forest with a Vaccinium understory. Phenology: vegetative only.RMUSFS872427 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton2648Emily Elliott Ken Elliott200776187U.S.A.MontanaGallatinGallatin Range: Gallatin National Forest: along Forest Road 62, ca 1 road mi from forest boundary, ca 8.5 air mi S of Bozeman.-111.071745.563717311743Roadside, disturbed area, and creek area. Phenology: spores.RMUSFS872316 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton2770Emily Elliott Ken Elliott200778189U.S.A.MontanaParkAbsaroka Range: Gallatin National Forest: along Forest Road 348 near Sixmile Creek, ca 30 air mi SSW of Livingston.-110.752345.243217921804Riparian area between road and creek. Phenology: spores.RMUSFS872317 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton4073Emily Elliott Brian Elliott2007731212U.S.A.MontanaParkAbsaroka Range: Gallatin National Forest: trail along Wallace Creek to Wallace Pass, ca 29-32 air mi SSE of Livingston.-110.493645.244420122621Spruce-fir forest with Vaccinium understory. Phenology: spores.RMUSFS872318 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton4186Emily Elliott Brian Elliott200783215U.S.A.MontanaSweet GrassAbsaroka Range/Beartooth Mountains: Gallatin National Forest: along Forest Road 6639 and the Boulder River, ca 22 air mi SE of Livingston.-110.20145.473116081609Riparian area and active beaver dams. Phenology: spores.RMRM828601 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton1230Charity Hall Brian Jacobs and Alex Morgan1998622173U.S.A.ColoradoCusterWet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: Sangre de Cristo Range: San Isabel National Forest: end of Music Pass Road.-105.438337.93328042835Fine-grained soil; dominant species: ponderosa and aspen. Phenology: vegetative only.RMRM919525 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton434Laura E. Lukas2007613164U.S.A.WyomingAlbanyMedicine Bow Mountains: above North Fork Gramm Creek, near intersection of Forest roads 520 and 520H, ca 32 mi SW of Laramie; ca 19 mi S of Centennial.-106.083241.02962645Wetland dominated by willows above creek. Phenology: vegetative only.RMRM919535 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton1114Laura E. Lukas2007622173U.S.A.WyomingAlbanyMedicine Bow Mountains: Boswell Creek, N of Forest Road 526, ca 4 mi E of Wyo Hwy 230; ca 4 air mi E of Wycolo; ca 21 air mi S of Centennial.-106.128540.99882629Meadow along creek. Phenology: vegetative only.RMRM919534 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton1469Laura E. Lukas2007627178U.S.A.WyomingCarbonMedicine Bow Mountains: Platte River Wilderness: along Trail 506 and Douglas Creek, 1 air mi E of Pike Pole Campground, ca 44 air mi SW of Laramie; ca 29 air mi SE of Saratoga.-106.420341.13412273Mixed spruce-fir forest along creek. Phenology: vegetative only.RMRM919524 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton2276Laura E. Lukas2007713194U.S.A.WyomingCarbonMedicine Bow Mountains: Barrett Creek, along Forest Road 225 (South French Creek Road), ca 3 air mi S of Wyo Hwy 130, ca 20 air mi SE of Saratoga.-106.478141.29522615Mixed conifer forest on edge of park. Phenology: fruiting.RMRM919523 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton2949Laura E. Lukas2007720201U.S.A.WyomingCarbonMedicine Bow Mountains: S of Elkhorn Creek and North Platte River area W of Forest Road 534, ca 48 air mi SW of Saratoga.-106.330641.0032502Along creek. Phenology: vegetative only.RMRM919522 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton3494Laura E. Lukas2007730211U.S.A.WyomingCarbonMedicine Bow Mountains: South French Creek, ca 2 air mi W of intersection of Forest roads 225 and 206, ca 23 air mi SE of Saratoga.-106.456841.240724612611Draw. Phenology: vegetative only.RMRM919521 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton3591Laura E. Lukas2007730211U.S.A.WyomingCarbonMedicine Bow Mountains: Mullen Creek, ca 1 air mi E of intersection of Forest Road 500 (French Creek Road) and Forest Road 225 (South French Creek Road), ca 26 air mi SE of Saratoga.-106.401141.23052668Wet, open conifer-aspen forest uphill from creek. Phenology: spores.RMRM919520 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton3900Laura E. Lukas200783215U.S.A.WyomingAlbanyMedicine Bow Mountains: Platte River Wilderness: Douglas Creek Trail, ca 39 air mi SE of Saratoga; ca 8 air mi W of Foxpark.-106.30941.07825202523Near and on rock mounds (from mining), near creeks; wooded with lodgepole pine. Phenology: spores.RMRM919519 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton4696Laura E. Lukas2007817229U.S.A.WyomingAlbanyMedicine Bow Mountains: Jelm Creek area, ca 1.5 air mi SE of Chimney Park Camp and ca 5 air mi SW of Woods Landing.-106.084841.0612739Wooded creek. Phenology: vegetative only.RMRM919533 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton5129Laura E. Lukas2008618170U.S.A.WyomingCarbonMedicine Bow Mountains: White Rock Canyon, ca 0.5 air mi W of Forest Road 111, ca 5 air mi WSW of Arlington; ca 28 air mi NNE of Saratoga.-106.286941.57422584Edge of creek with lodgepole pine overstory. Phenology: flowering.RMRM919532 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton5779Laura E. Lukas200872184U.S.A.WyomingCarbonMedicine Bow Mountains: Rock Creek Canyon, within ca 1 air mi of Forest Trail 106 (Rock Creek Trail) northern trailhead, ca 2 air mi SW of Arilington; ca 19 air mi NNW of Centennial.-106.230441.57722406Moist mixed conifer forest, uphill from creek. Phenology: fruiting.RMRM919531 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton5943Laura E. Lukas Patricia E. Lukas200879191U.S.A.WyomingCarbonMedicine Bow Mountains: Platte River Wilderness: surrounding confluence of Devils Gate Creek and Douglas Creek, ca 4 air mi SE of Trail 506 Trailhead and Pike Pole Campground, ca 17 air mi SSW of Centennial.-106.368241.11424442446Mixed conifer-aspen forest along creek. Phenology: vegetative only.RMRM919530 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton6107Laura E. Lukas Patricia E. Lukas2008714196U.S.A.WyomingCarbonMedicine Bow Mountains: Savage Run Wilderness: along Savage Run Creek and Trail 501, ca 1/3 mi from intersection with Trail 502, ca 14 air mi SW of Centennial.-106.377241.18812681Wet meadow on edge of conifer forest. Phenology: vegetative only.RMRM919529 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton6869Laura E. Lukas2008725207U.S.A.WyomingCarbonMedicine Bow Mountains: Sawmill Park, S of intersection of Forest roads 120 and 120.2F, ca 8 air mi SW of Arlington; ca 19 air mi NW of Centennial.-106.324441.53472714Park. Phenology: vegetative only.RMRM919528 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton7309Laura E. Lukas2008730212U.S.A.WyomingCarbonMedicine Bow Mountains: vicinity of Pass Creek, S of intersection of Forest Road 261 (Cedar Pass Road) and Forest Road 134, ca 18 air mi E of Saratoga; ca 15 air mi SW of Arlington.-106.453341.48372550Along creek in open conifer forest with many willows and alders. Phenology: fruiting.RMRM919527 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton8437Laura E. Lukas Bernadette Kuhn2008823236U.S.A.WyomingAlbanyMedicine Bow Mountains: Sheep Mountain, along Trail 386 (Sheep Mountain Trail), near top of Chokecherry Creek, ca 23 air mi WSW of Laramie; ca 7 air mi SE of Centennial.-106.031941.24392807Wet meadow, Carex-dominated. Phenology: vegetative only.RMRM157809 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eatons.n.J. Lunell191073184U.S.A.North DakotaBensonLeeds.Railroad bank. Phenology: vegetative only.RMRM157810 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eatons.n.J. Lunell1910812224U.S.A.North DakotaBensonLeeds.Railroad bank, between the rails. Phenology: vegetative only.RMRM828602 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton915Charity Hall Brian Jacobs and Alex Morgan1998617168U.S.A.ColoradoChaffeeWet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: Sawatch Range: San Isabel National Forest: Mears Junction, ca 1 mi beyond Rainbow Trailhead.-106.111238.43132682Drainage plus two adjacent slopes; soil fine-grained with some granite chunks; ponderosa, dominant species: ponderosa, Douglas fir, aspen, and pinyon. Phenology: spores.RMUSFS872319 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton4776Emily Elliott Brian Elliott2008619171U.S.A.MontanaGallatinGallatin Range: Gallatin National Forest: along Forest Road 1702, before the Tom Miner Trailhead, ca 18.5 air mi WNW of Gardiner .-111.066845.12422286Moist, dense conifer forest. Phenology: spores.RMUSFS886559 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton3969Hans Hallman2009811223U.S.A.MontanaCarterCuster National Forest: Long Pines: in Cheesman Draw, just NE of Pioneer Cemetery off of Forest Road 3045, ca 8.5 air mi WNW of Camp Cook, SD.-104.140645.586811211134Moist to wet draw within historic burn. Phenology: vegetative only.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton1622AEmily Elliott Ronald L. Hartman2007611162U.S.A.MontanaGallatinBeartooth Plateau and Gallatin National Forest and vic.: Buffalo Horn Creek, 1.4 road mi up stream.-111.196445.107122252378Riparian. Phenology: vegetative only.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton1690AEmily Elliott Ronald L. Hartman2007612163U.S.A.MontanaGallatinGallatin Range: Gallatin National Forest: Red Cliff Campground on the Gallatin River, ca 36.5 air mi SSW of Bozeman.-111.242645.170718902073Riparian. Phenology: spores.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton14817Brian Elliott201061152U.S.A.WyomingCrookBlack Hills National Forest: ca 12.5 air mi W (265°) of Spearfish, SD, E of Sand Creek Road in the vicinity of Dugout Gulch.1201Riparian corridor dominated by Ostrya virginiana. Survey ID: 10DUG001 Phenology: vegetative only.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton976aMichael K. Kirkpatrick201063154U.S.A.ColoradoMesaWhite River National Forest: along West Divide Creek drainage and uplands, ca 16-20 air mi SSE of Silt.-107.539739.310422312463Tributary stream through spruce-aspen forest and adjacent pond. Phenology: vegetative only.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton1844Michael K. Kirkpatrick2010622173U.S.A.ColoradoEagleWhite River National Forest: Fitzpatrick Gulch, ca 7 air mi SSW of Gypsum.-107.029539.560223012317Riparian woodland and wet meadows. Phenology: vegetative only.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton80971B. E. Nelson2010911254U.S.A.MontanaPhillipsLittle Rocky Mountains: Montana Gulch Campground, ca 0.5 air mi W of Landusky; ca 48.5 air mi SW of Malta.-108.632347.89861219Along the creek in the campground. Phenology: spores.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton81060B. E. Nelson2010911254U.S.A.MontanaPhillipsLittle Rocky Mountains: along South Big Horn Creek NE of Damon Hill, ca 5-5.5 air mi SE of Hays; ca 46 air mi SW of Malta.-108.623647.934912921341Paper birch-aspen-balsam poplar forest along stream in canyon. Phenology: spores.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton1498Joseph L. M. Charboneau2010711192U.S.A.MontanaPhillipsLittle Rocky Mountains: eastern wall of Montana Gulch and Montana Gulch Campground, ca 5 air mi WSW of Zortman; ca 49.5 air mi SW of Malta.-108.632247.900412191341Streamside. Phenology: vegetative only.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton3524Joseph L. M. Charboneau2010821233U.S.A.MontanaPhillipsLittle Rocky Mountains: Beaver Creek, ca 1.5 air mi ENE of the intersection of the road from Camp Creek and the Beaver Creek Trail, ca 2 air mi E of Beaver Mountain, ca 3 air mi NNE of Zortman; ca 41 air mi SW of Malta.-108.491547.95812401320Streamside. Phenology: spores.RMRM828917 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton6803Brian Elliott Elizabeth Mark199969160U.S.A.ColoradoSaguacheWet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: Sangre de Cristo Range: Rio Grande National Forest: ca 2 mi up North Crestone Creek Trail, ca 2 air mi NE of Crestone.-105.663438.03442621Picea pungens, Pseudotsuga menziesii. Phenology: spores.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton4743Joseph L. M. Charboneau2011610161U.S.A.MontanaPhillipsLittle Rocky Mountains: Mill Gulch and ridge to the E, ca 0.5 air mi NE of Landusky; ca 4.5 air mi WSW of Zortman; ca 48 air mi SW of Malta.-108.614747.901212561442Streamside and riparian thickets. Phenology: spores.RMUSFS898944 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton5829aMichael K. Kirkpatrick201169160U.S.A.ColoradoPitkinWhite River National Forest: Perham Creek, between Assignation Ridge and the Crystal River, ca 9 air mi S of Carbondale.-107.254639.266321952378Forested riparian corridor with aspen, spruce, and Douglas-fir. Phenology: vegetative only.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton6294aMichael K. Kirkpatrick2011619170U.S.A.ColoradoEagleGore Range: Cottonwood Creek drainage, less than 0.5 air mi above confluence with Sheephorn Creek along County Road 11B, ca 8 air mi NE of State Bridge.-106.516239.91772225Riparian corridor with cottonwood, alder, and willow. Phenology: vegetative only.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton768bMichael K. Kirkpatrick2010529149U.S.A.ColoradoGarfieldBattlement Mesa: White River National Forest: between Cottonwood and Cache creeks, S of Holms Mesa, ca 10 air mi SW of Rifle.-107.91439.431523012439Riparian corridor through oakbrush shrubland. Phenology: vegetative only.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton1708bMichael K. Kirkpatrick2010620171U.S.A.ColoradoEagleWhite River National Forest: Taylor Creek, between Seven Castles and Otto Creek, ca 2 air mi ENE of Christine State Wildlife Area and ca 5 air mi ENE of Basalt.-106.940639.39152219Channelized riparian corridor and aspen grove with open meadow. Phenology: vegetative only.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton2214bMichael K. Kirkpatrick201071182U.S.A.ColoradoPitkinWhite River National Forest: Coal Creek and adjacent road (Forest Road 307), ca 2 air mi SE of Coal Basin, ca 14 air mi SSW of Carbondale.-107.317439.202124842560Riparian corridor with willow and alder at edge of spruce-fir forest. Phenology: vegetative only.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton2311bMichael K. Kirkpatrick201073184U.S.A.ColoradoPitkinWhite River National Forest: Hunter Creek, ca 2 air mi NE of Aspen.-106.795739.207626062743Riparian corridor lined with willows and alder. Phenology: spores.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton6527bMichael K. Kirkpatrick2011624175U.S.A.ColoradoPitkinSawatch Range: White River National Forest: Hannon Creek drainage, N of Woody Creek, ca 3 air mi W of Lenado and ca 4 air mi N of Aspen.-106.814539.252724392560Riparian corridor with spruce, willow, aspen, and graminoid-forb understory. Phenology: vegetative only.RM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton76611B. E. Nelson2008821234U.S.A.MontanaCarbonPryor Mountains: Custer National Forest: along Stevens Draw below the northwest side of Tie Flat, ca 23.5 air mi ESE of Bridger.-108.459445.1819812103Drier meadows and open slopes along the stream. Phenology: spores.RMUSFS Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton545Emma E. Freeland2012611163U.S.A.MontanaMadisonMadison Range: Lee Metcalf Wilderness, Taylor Hilgard Unit: Indian Creek, ca 6-7 air mi SW of Sphinx Mountain, ca 20 air mi SSE of Ennis.-111.565445.101218621884Along a creek. Phenology: vegetative only.RMUSFS Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton726Emma E. Freeland2012615167U.S.A.MontanaMadisonSnowcrest Range: Lewis Creek and Badger Creek, ca 20 air mi S of Virginia City, ca 0.5-2.5 air mi W of Vigilante Station.-111.974545.014719511975Along a gulch in a Douglas fir forest. Phenology: spores.RMUSFS Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton1166Emma E. Freeland Justine Modica2012622174U.S.A.MontanaMadisonMadison Range: Mill Creek, ca 2-3 air mi NW of Lake Cameron, ca 11 air mi SE of Ennis.-111.564345.23042231Along a stream in a Picea and Pseudotsuga forest. Phenology: vegetative only.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton1404Emma E. Freeland Justine Modica2012626178U.S.A.MontanaMadisonRuby Range: Laurin Canyon to Ruby Peak, ca 22-24 air mi ENE of Dillon, ca 9-10 air mi S of Sheridan.-112.213245.32752134Along a small, spring-fed stream. Phenology: vegetative only.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton1594Emma E. Freeland Nicholas P. Freeland201273185U.S.A.MontanaMadisonGravelly Range: Ruby River, ca 9 air mi NW of Black Butte, ca 20 air mi S of Virginia City.-111.961545.0121875Riverbank with Carex and Salix. Phenology: vegetative only.RM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton3969Hans Hallman2009811223U.S.A.MontanaCarterCuster National Forest: Long Pines: in Cheesman Draw, just NE of Pioneer Cemetery off of Forest Road 3045, ca 8.5 air mi WNW of Camp Cook, SD.-104.140645.586811211134Moist to wet draw within historic burn. Phenology: vegetative only.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton11426Lori E. Brummer2012827240U.S.A.ColoradoMesaPlateau Creek at confluence with Big Wash, ca 1 mi E of the junction of Colo Hwy 65 and I-70, ca 17 air mi NE of Grand Junction.-108.273839.18081569In creek cobbles. Phenology: spores.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton11700Lori E. Brummer2012910254U.S.A.ColoradoDeltaGunnison Gorge National Conservation Area: West River Trail from trailhead on South River Road, near the confluence of the North Fork Gunnison River and the Gunnison River to the Gunnison Gorge Wilderness area, ca 6 air mi SW of Hotchkiss.-107.832138.755915631571Lowland riparian in sparse/pinyon/juniper/rock. Phenology: spores.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton11893Lori E. Brummer Gay Austin2012914258U.S.A.ColoradoDeltaUncompahgre Plateau: Escalante Canyon: Cottonwood Spring, ca 9 3/4 road mi up the canyon from the Gunnison River, ca 15.5 air mi SW of Delta.-108.342538.66891803Along intermittent stream in sandstone canyon. Phenology: vegetative only.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton125Joshua J. Irwin2010517137U.S.A.IdahoLemhiSalmon National Forest: Salmon River Gorge: along lower Cove Creek, 7.7 air mi WSW of Shoup.-114.4238945.335116010° slope, SSE aspect; granite geology.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton4896Joshua J. Irwin2011611162U.S.AIdahoLemhiSalmon River: breaks just SE of the confluence of Warm Springs Creek and the Salmon River, 19.7 air mi S of Salmon.-113.9618144.894611336>150 plants estimated in mesic coarse textured soil within roadside vegetation, 12 degree slope, SE aspect, rhyodacite geology. Phenology: spores.RM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton1383bC. H. Refsdal1994630181U.S.A.UtahDaggettNorth Slope Uinta Mountains: Ashley National Forest: Deep Creek drainage, ca 9 air mi S of Manila; ca 3.7 road mi W of Utah Hwy 44 on south side of Forest Road 539.-109.729940.850823292347Spruce forest, bogs, meadows, willows, and gentle slopes at creek. Phenology: vegetative only.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton89445Ronald L. Hartman Joshua J. Irwin2010514134U.S.A.IdahoLemhiSalmon National Forest: Salmon River Mountains: road to Williams Creek Summit, immediately W of east entrance to forest, ca 6.5 air mi SSW of the junction of U.S. Hwy 93 and Ida Hwy 28 at south end of Salmon.-113.981145.08291737Steep boulder field on south exposure.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton90831Ronald L. Hartman201081213U.S.A.IdahoLemhiSalmon National Forest: Salmon River Mountains: Forest Road 055 at junction with Forest Road 076 to Leesburg; Panther Creek and Napias Creek area.-114.217145.13791485Roadside and seasonally wet fields; also adjacent to stream.RMRM914419 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton10937Robert D. Dorn2013821233U.S.A.WyomingGoshenNorth Platte River ca 2 mi S of Lingle.-104.35166742.1033331280Bank of canal immediately alongsiode river, with Fraxinus and Symphoricarpos.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton91556Ronald L. Hartman Emma E. Stewart2011613164U.S.A.IdahoLemhiNorthern Salmon River Mountains: Salmon Wild and Scenic River/Frank Church - River of No Return Wilderness: along Horse Creek from the river ca 0.5 mi N to Pinto Creek.-114.73676745.403683884932RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton92026Ronald L. Hartman2011816228U.S.A.IdahoCusterChallis National Forest: Southern Salmon River Mountains: ca 11 road mi N of Ida Hwy 75 on Squaw Creek Road, ca 16.5 air mi SW of Challis.-114.481644.347551855Douglas fir forest with rock outcrop; slate (metamorphic) at edge of mountain mahogany and seep below.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton4405Emma E. Freeland Nicholas P. Freeland2013525145U.S.A.MontanaMadisonTobacco Root Mountains: Mill Creek, ca 13 air mi ESE of Twin Bridges; ca 19 air mi WNW of Ennis.-112.0889645.4802719512012Banks of a creek. Phenology: spores.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton5538Emma E. Freeland2013615166U.S.A.MontanaMadisonMadison Range: Taylor Hilgard Unit of Lee Metcalf Wilderness: North Fork Bear Creek and Cameron Creek, ca 3-5 air mi NW of Sphinx Mountain, ca 14-15 air mi SE of Ennis.-111.551645.17671942Picea forest along a creek. Phenology: spores.RM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton3107aC. H. Refsdal199494247U.S.A.UtahDaggettNorth Slope Uinta Mountains: Flaming Gorge National Recreation Area: Sheep Creek, ca 4 air mi S of Manila; junction of Forest Road 218 and Utah Hwy 44 on west side of Forest Road.-109.729940.92331902Creek with willows and Carex. Phenology: vegetative only.RM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton3217bC. H. Refsdal199494247U.S.A.UtahDaggettNorth Slope Uinta Mountains: Ashley National Forest: south side of Forest Road 539 along west side of Deep Creek; Deep Creek Campground.-109.729940.85082347Spruce forest, seeps, streambank. Phenology: spores.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton1311Georgia G. Thomas2013725206U.S.A.IdahoIdahoNez Perce National Forest: Middle Fork Clearwater Wild and Scenic River: Selway River Drainage: Race Creek Trail Head: ca 3/4 mi on Forest Trail 4 along Selway River, ca 20 mi on Forest Road 223, ca 34 air mi ESE of Kooskia.-115.277646.0439538Mixed conifer forest, Thuja plicata, grand fir, Douglas fir, ponderosa pine.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton92289Ronald L. Hartman Jack Hartman201267159U.S.A.IdahoIdahoNez Perce National Forest: forest boundary just E of Blackerby Picnic Area on Ida Hwy 14 to Elk City, ca 4.5 air mi SE of Grangeville.-116.035845.8887609Roadside. Phenology: spores.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton93246Ronald L. Hartman Georgia G. Thomas2013614165U.S.A.IdahoIdahoBitterroot National Forest: along Selway River ca 5 road mi upstream from Paradise Ranger Station, ca 63 air mi ESE of Kooskia.-114.76208345.7952171021Slopes of conifers and rock outcrops.RMRM937819 Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton11822Robert D. Dorn2016816229U.S.A.South DakotaLawrenceCa 3 mi SW of Savoy.-103.9844.331707Wet meadow, with Salix, Solidago. Phenology: spores.RMRM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton3635Crista L. O'Conner2017616167U.S.A.IdahoIdahoClearwater Mountains: Jerry Johnson Hot Springs at Warm Springs Creek, ca 1 air mi SE of trailhead and ca 23 air mi NNE Lochsa Historical Ranger Station.-114.871846.4614987Wetlands and swales of standing water fed by outflow of thermal springs and groundwater flow. Thuja plicata common in periphery and Picea engelmannii occasional in standing water where Carex utriculata is abundant. Phenology: spores.RM Equisetum hyemale var. affinephysical specimenEquisetaceaeEquisetumhyemalevar. affine(Engelm.) A. A. Eaton7900C. H. Refsdal199592245U.S.A.UtahDaggettNorth Slope Uinta Mountains: Flaming Gorge National Recreation Area: Carter Creek, ca 8.1 air mi S of Manila on north side of Utah Hwy 44.-109.57740.865321952225Creekside, willows, Picea, red sandy soils. Phenology: spores.36003,1,0true