Record Number Database Code Specimen ID Project Herbarium Accession Number Barcode NPS Accession NPS Catalog Family Genus 1 Specific Epithet 1 Specific Author 1 Infraspecific Rank 1 Infraspecific Epithet 1 Infraspecific Author 1 Name 1 Qualifier Name 1 Qualifier Position Hybrid Symbol Genus 2 Specific Epithet 2 Specific Author 2 Infraspecific Rank 2 Infraspecific Epithet 2 Infraspecific Author 2 Name 2 Qualifier Name 2 Qualifier Position Conservation Status Annotations Site Key Collector Collector Number Other Collectors Day Collected Month Collected Year Collected Verbatim Collection Date Country State County Locality Site Description Minimum Elevation Maximum Elevation Elevation Unit LatitudeLongitude UTM TRS Decimal Latitude Decimal Longitude Geodetic Datum Coordinate Uncertainty Coordinate Uncertainty Unit Elevation Georeferenced TRS Georeferenced Georeference Sources Georeference Remarks Georeferenced By Specimen Notes Other Notes Phenology Cultivated Images Type Specimen? TypeDetails 1 RM 110910 Ebertowski 2002 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene 1. Toxicodendron rydbergii (Small ex Rydb.) Greene
Annotated by Peter J. Ebertowski. RM-14336 B. E. Nelson 57249 18 6 2002 U.S.A. Wyoming Campbell Thunder Basin National Grassland and Vicinity: along West Fork Duck Creek, ca 7.5 air mi NE of Soda Well, ca 28 air mi NE of Gillette. Draws leading to the creek with chokecherry and hawthorn. 3940 4000 ft. 44.7173° N, 105.1975° W; uncertainty 1 mi. T55N R69W S30 W1/2 44.7173 -105.1975 1 mi. Vegetative N N 2 RM 111432 Ebertowski 2002 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-14358 Peter J. Ebertowski 1110 3 7 2002 U.S.A. Wyoming Niobrara Thunder Basin National Grassland and Vicinity: Old Woman Creek Hills, ca 2.5 air mi E of U.S. Hwy 85, ca 52 air mi S of Newcastle; ca 25 air mi NNE of Lusk. Steep ravine. 4250 4520 ft. 43.0966° N, 104.3171° W; NAD 83, uncertainty 0.5 mi., Nat. Geog. TOPO! T36N R62W S16 43.0966 -104.3171 NAD 83 1 mi. N N Nat. Geog. TOPO! BEN Vegetative N N 3 RM 113003 Ebertowski 2002 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-14414 Peter J. Ebertowski 2523 2 8 2002 U.S.A. Wyoming Campbell Thunder Basin National Grassland and Vicinity: hills N of Weston Peak on Forest Road 1246, ca 25 air mi NNE of Gillette; ca 33 air mi NW of Moorcroft. Near seep in shady ravine with Rocky Mountain juniper. 3930 4420 ft. 44.6292° N, 105.3595° W; uncertainty 1 mi. T54N R71W S26 W1/2 44.6292 -105.3595 1 mi. Fruiting N N 4 RM 113046 Ebertowski 2002 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-14415 Peter J. Ebertowski 2562 2 8 2002 U.S.A. Wyoming Campbell Thunder Basin National Grassland and Vicinity: Wild Horse Creek on York or Forest Road 900, ca 27 air mi NNE of Gillette; ca 24 air mi N of Rozet. Creek bank and floodplain. 3960 4050 ft. 44.6292° N, 105.2178° W; uncertainty 0.5 mi. T54N R70W S25 SE1/4 44.6292 -105.2178 1 mi. Fruiting N N 5 RM 114296 Ebertowski 2002 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-14466 Peter J. Ebertowski 3684 1 9 2002 U.S.A. Wyoming Weston Thunder Basin National Grassland and Vicinity: along West Plum Creek on Plum Creek or County Road 30, ca 6.5 air mi NW of Newcastle, ca 7 air mi ESE of Osage. Mosaic of sagebrush/grassland and ponderosa pine. 4460 ft. 43.9359° N, 104.289° W; uncertainty 0.5 mi. T46N R62W S27 SE1/4 43.9359 -104.289 1 mi. Vegetative N N 6 RM 114812 Ebertowski 2002 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-14479 Peter J. Ebertowski 769 28 6 2002 U.S.A. Wyoming Weston Thunder Basin National Grassland and Vicinity: above and S of reservoir in gully leading to Robbers Roost Creek, on Cheyenne River or County Road 54, ca 24 air mi SSW of Newcastle; ca 44 air mi SSE of Upton. Grassland. 3980 4060 ft. 43.516° N, 104.3119° W; uncertainty 0.5 mi. T41N R62W S21 NE1/4 43.516 -104.3119 1 mi. Vegetative N N 7 RM 115395 Ebertowski 2003 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-14495 Peter J. Ebertowski 4077a 30 5 2003 U.S.A. Wyoming Campbell Thunder Basin National Grassland and Vicinity: badlands ca 1 mi NW of Soda Well, on Forest Road 1247B, ca 31 air mi NNE of Gillette; ca 34 air mi NNW of Moorcroft. Sagebrush grassland, with ravines containing ponderosa pine and Rocky Mountain juniper. 3860 4100 ft. 44.7026° N, 105.2785° W T55N R70W S33 W1/2 44.7026 -105.2785 Vegetative N N 8 RM 116302 Ebertowski 2003 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-14522 Peter J. Ebertowski 4978 16 6 2003 U.S.A. Wyoming Campbell Thunder Basin National Grassland and Vicinity: Piney Canyon on Piney Canyon or County Road 69, ca 22 air mi ESE of Wright; ca 48 air mi WSW of Newcastle. Slopes around spring with ponderosa pine. 4840 5060 ft. 43.5868° N, 105.1098° W T42N R69W S26 43.5868 -105.1098 Buds N N 9 RM 117254 Ebertowski 2003 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-14544 Peter J. Ebertowski 5926 3 7 2003 U.S.A. Wyoming Campbell Thunder Basin National Grassland and Vicinity: hills N of confluence of North Fork Duck Creek and Duck Creek, off dirt road to Dickinson Ranch, ca 39 air mi NNE of Gillette; ca 39 air mi NNW of Moorcroft. Ravine slope with Rocky Mountain juniper and low shrubs. 3800 3940 ft. 44.8086° N, 105.1883° W T56N R69W S30 W1/2 44.8086 -105.1883 Vegetative N N 10 RM 117551 Ebertowski 2003 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-14550 Peter J. Ebertowski 6223 7 7 2003 U.S.A. Wyoming Weston Thunder Basin National Grassland and Vicinity: tributary of Skull Creek, E of Sunquist Draw, on County Road 14, ca 13 air mi ESE of Upton; ca 15 air mi NE of Newcastle. Grassland on rocky hillside. 4580 4640 ft. 44.0481° N, 104.3896° W T47N R63W S14 W1/4 44.0481 -104.3896 Vegetative N N 11 RM 117724 Ebertowski 2003 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-14554 Peter J. Ebertowski 6395 9 7 2003 U.S.A. Wyoming Niobrara Thunder Basin National Grassland and Vicinity: Sage Creek on Old Highway 85 or County Road 9, ca 4.5 air mi E of Mule Creek Junction; ca 32 air mi S of Newcastle. Grassy ravine with silver sagebrush. 3880 3960 ft. 43.3608° N, 104.1309° W; NAD 83, uncertainty 0.25 mi., Nat. Geog. TOPO! T39N R61W S13 NE1/4 43.3608 -104.1309 NAD 83 0 mi. N N Nat. Geog. TOPO! BEN Vegetative N N 12 RM 118517 Ebertowski 2003 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-14573 Peter J. Ebertowski 7187 27 7 2003 U.S.A. Wyoming Campbell Thunder Basin National Grassland and Vicinity: tributary of Dry Fork Spring Creek, on York or Forest Road 900, ca 30 air mi NE of Gillette; ca 31 air mi NW of Moorcroft. Narrow ravine lined by ponderosa pine. 3920 4100 ft. 44.6733° N, 105.2178° W T54N R70W S12 44.6733 -105.2178 Fruiting N N 13 RM 118897 Ebertowski 2003 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-14580 Peter J. Ebertowski 7566 2 8 2003 U.S.A. Wyoming Campbell Thunder Basin National Grassland and Vicinity: West Fork Duck Creek, on two-track off Forest Road 903, ca 34 air mi NNE of Gillette; ca 34 air mi NNW of Moorcroft. Ravine with occasional boxelder and ash on slopes. 3980 4150 ft. 44.732° N, 105.1975° W T55N R69W S19 SE1/4 44.732 -105.1975 Vegetative N N 14 RM 119665 Ebertowski 2003 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-14606 Peter J. Ebertowski 8333 19 8 2003 U.S.A. Wyoming Weston Thunder Basin National Grassland and Vicinity: ridge E of Lone Tree Creek, on Raven Creek or County Road 18, ca 34 air mi W of Newcastle; ca 25 air mi S of Moorcroft. Steep ravine slope, bare soil in sagebrush grassland. 4620 4760 ft. 43.9078° N, 104.9124° W T45N R67W S4 E1/2 43.9078 -104.9124 Vegetative N N 15 RM 12281 Arizona 2004 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-681 B. E. Nelson 63456 24 9 2004 U.S.A. Arizona Coconino Coconino National Forest: SE of switch back on County Road 128 at base and lower slope of Anderson Mesa, ca 10 air mi SE of Flagstaff. Rocky draw through ponderosa pine forest. 6880 7100 ft. 35.0879° N, 111.5294° W; GPS Reading T20N R8E S27 E1/2; also W1/4 S26 35.0879 -111.5294 GPS Reading Vegetative N N 16 RM 12438 Arizona 2004 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-689 B. E. Nelson 63613 James F. Fowler 25 9 2004 U.S.A. Arizona Coconino Coconino National Forest: in and along James Canyon from I-17 W, ca 11 air mi S of Flagstaff. Rocky shallow canyon. 6500 6600 ft. 35.0466° N, 111.6907° W; GPS Reading T19N R7E S7 SE1/4 35.0466 -111.6907 GPS Reading Vegetative N N 17 RM 12577 Arizona 2004 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-696 B. E. Nelson 63752 James F. Fowler 26 9 2004 U.S.A. Arizona Coconino Coconino National Forest: above and in upper Walnut Canyon from County Road 3 (Forest Hwy 3) to the junction with Skunk Canyon, ca 4.5 - 5 air mi SE of Flagstaff. Slopes of small side canyon. 6720 6800 ft. 35.1316° N, 111.6052° W to 35.15° N, 111.6° W; GPS Reading T20N R7E S1 SE1/4 35.1316 -111.6052 GPS Reading Vegetative N N 18 RM 13140 Arizona 2004 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene 1. Toxicodendron rydbergii (Small ex Rydb.) Greene
Annotated by B. E. Nelson. RM-715 Ronald L. Hartman 80370 James F. Fowler 28 8 2004 U.S.A. Arizona Coconino Coconino National Forest: Sterling Canyon, last mile of Manzanita Trail to Manzanita Campground and down road to Encinoso Picnic Area. Ponderosa pine slopes. 4728 4849 ft. 34.9366° N, 111.747° W to 34.9258° N, 111.7349° W; GPS Reading T18N R6E S17; also S18 34.9366 -111.747 GPS Reading Fruiting N N 19 RM 132456 Evert 1986 RM 725152 RM0040417 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-15359 Erwin F. Evert 10231 22 6 1986 U.S.A. Wyoming Park North Fork Shoshone River Drainage: Absaroka Mountains: north side of North Fork Shoshone River, ca 1 mi W of the mouth of Canyon Creek. Around spring runs with Elymus, Rosa, and Apocynum. 5800 ft. 44.4618° N, 109.5435° W T52N R105W S19 44.4618 -109.5435 N RM0040417 N 20 RM 14136 Arizona 2005 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-753 B. E. Nelson 66521 13 9 2005 U.S.A. Arizona Coconino Coconino National Forest: Skunk Canyon where Forest Road 720 crosses, ca 3.5 air mi S of Flagstaff. Open ponderosa pine forest on limestone slope. 6900 6950 ft. 35.1452° N, 111.6394° W; GPS Reading T20N R7E S3 E1/4 35.1452 -111.6394 GPS Reading Vegetative N N 21 RM 15003 Arizona 2005 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-771 B. E. Nelson 67388 22 9 2005 U.S.A. Arizona Apache Apache National Forest: along West Fork Black River just below Forest Road 25, ca 0.8 air mi NW of the confluence with East Fork Black River, ca 1 1/4 air mi W of Buffalo Crossing, ca 26.5 air mi S of Springerville. Open ponderosa pine forest on bluff along the stream. 7520 7600 ft. 33.7589° N, 109.3746° W; GPS Reading T4N R28E S11 NW1/4 33.7589 -109.3746 GPS Reading Vegetative N N 22 RM 15720 Arizona 2006 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-792 B. E. Nelson 69898 James F. Fowler, Brian Reif 25 8 2006 U.S.A. Arizona Coconino Sitgreaves National Forest: Mogollon Plateau: Chevelon Canyon Campground and Chevelon Crossing on Forest Road 504, ca 15.5 air mi NW of Heber; ca 30.5 air mi S of Winslow. Stream bank and adjacent thickets. 6140 6200 ft. 34.5916° N, 110.7879° W T14N R15E S19 NE1/4 34.5916 -110.7879 Vegetative N N 23 RM 162621 Flaig 2004 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene 1. Toxicodendron rydbergii (Small ex Rydb.) Greene
Annotated by Jeanette Flaig. RM-16835 B. E. Nelson 62683 15 8 2004 U.S.A. Colorado Archuleta Eastern San Juan Mountains: northeast end of Mesa Cortado, S of U.S. Hwy 84, ca 17.5-18 air mi SE of Pagosa Springs. Gambels oak/Rocky Mountain juniper slope with scattered ponderosa pine. 7800 8300 ft. 37.0727° N, 106.8505° W; GPS Reading T33N R1E S28 N1/2 37.0727 -106.8505 GPS Reading Vegetative N N 24 RM 167318 Flaig 2004 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-17013 Jeanette Flaig 7393 8 8 2004 U.S.A. Colorado Archuleta Eastern San Juan Mountains: U.S. Hwy 160, old road just N of highway before ascending Yellow Jacket Pass, Squaw Creek on south side of highway. Roadside pullout on an old road. 7246 ft. 37.2346° N, 107.4215° W; GPS Reading T34N R5W S9 NW1/4 of NE1/4 37.2346 -107.4215 GPS Reading Flowering N N 25 RM 181953 Fowler Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-17313 James F. Fowler 1003 Jon Hak and C. Keleher 5 9 1992 5 September 1992 U.S.A. Utah Kane Glen Canyon National Recreation Area: Lower Cow Hanging Garden, Cow Canyon. Hanging garden. 1175 m. zone 12, 505060E, 4139649N; Specimen Label x505060:y4139649 N N 26 RM 181971 Fowler Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-17314 James F. Fowler 1027 Jon Hak and C. Keleher 6 9 1992 6 September 1992 U.S.A. Utah Kane Glen Canyon National Recreation Area: Fence Hanging Garden, Fence Canyon. Hanging garden. 1213 m. zone 12, 506611E, 4139277N; Specimen Label x506611:y4139277 N N 27 RM 181998 Fowler Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-17315 James F. Fowler 1060 Jon Hak and C. Keleher 7 9 1992 7 September 1992 U.S.A. Utah Kane Glen Canyon National Recreation Area: Stone Basin Hanging Garden, Cow Canyon. Hanging garden. 1200 m. zone 12, 505926E, 4141012N; Specimen Label x505926:y4141012 N N 28 RM 199399 Heidel 2005 RM 785938 RM0215577 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-18314 Daniel T. Busemeyer 1961 Leland Crane, David M. Ketzner, Mary Ann Feist, Richard L. Larimore, 15 6 2004 U.S.A. Wyoming Washakie Tensleep Preserve, The Nature Conservancy: southwest flank, foothills of the Big Horn Mountains, ca 10 mi E of Ten Sleep, Canyon Creek watershed, bottom of Canyon Creek Canyon. Old Maid Gulch quad. Found growing with Populus angustifolia, Prunus virginiana, Pinus ponderosa, Mahonia repens, Toxicodendron rydbergii, Shepherdia canadensis, Spiraea betulifolia var. lucida, Symphoricarpos oreophilus, Clematis occidentalis, Allium brevistylum, Thalictrum 5424 ft. 44.013° N, 107.2733° W; GPS Reading 44.013 -107.2733 GPS Reading Fruiting N RM0215577 N 29 RM 220226 Handley 1999 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene 1. Toxicodendron rydbergii (Small ex Rydb.) Greene
Annotated by Joy Handley. RM-20032 Ronald L. Hartman 64297 Joy Handley 2 6 1999 U.S.A. Idaho Adams Payette National Forest and Vicinity: trail from Eagle Bar to Red Ledge Mine along Snake River, 18 air mi W of Pinehurst. Rocky volcanic canyon land along river; Elymus spicatus and annual grasses with scattered shrubs. 1760 3240 ft. 45.2179° N, 116.7099° W T22N R3W S28 NE1/4; also W1/2 of NW1/4 S27 and W1/2 of S22 45.2179 -116.7099 Flowering N N 30 RM 236431 Taylor, Kevin 1998 772916 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-20814 Kevin J. Taylor 10586 17 8 1998 U.S.A. Colorado Gunnison Northern Gunnison Basin: ca 4 air mi E of Paonia Reservoir. Gambels oak forest up drainage; Prunus, Symphoricarpos, and Amelanchier. 6900 7400 ft. 38.9543° N, 107.2473° W T13S R88W S5 NW1/4 38.9543 -107.2473 Vegetative N N 31 RM 239681 Taylor, Kevin 1998 772917 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-21029 Kevin J. Taylor 7231 26 6 1998 U.S.A. Colorado Gunnison Northern Gunnison Basin: ca 2 air mi S of Paonia Reservoir. Oak forest and opening and along sandstone cliffs; Prunus, Douglas-fir, Symphoricarpos; also, aspen forest with dense 5 ft tall Pteridium understory. 7550 7900 ft. 38.925° N, 107.3404° W T13S R89W S16 SW1/4 38.925 -107.3404 Vegetative N N 32 RM 24580 Arizona/New Mexico USFS 512383 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene Toxicodendron rydbergii (Small ex Rydb.) Greene
Annotated by C. H. Muller. RM-4182 Elbert L. Little Jr. 4007 17 8 1935 U.S.A. Arizona Gila Tonto National Forest: Parker Creek Branch Station. 5 degree southwest slope; moist boulders; with Platanus, Alnus, Juglans and Quercus arizonica. 5070 ft. T5N R13E S1 33.7984 -110.9702 NAD 83 3 mi. N N Nat. Geog. TOPO! Fruiting N N 33 RM 246488 Kostel 2004 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene 1. Toxicodendron rydbergii (Small ex Rydb.) Greene
Annotated by Grace M. Kostel. RM-21545 B. E. Nelson 60554 Grace Kostel 14 5 2004 U.S.A. South Dakota Fall River Buffalo Gap National Grassland and Vicinity: breaks ca 12.5 air mi ESE of Oelrichs. Draws, gullies, and drainage channels in the breaks. 3200 3380 ft. 43.1141° N, 103.0053° W; GPS Reading T11S R9E S12 NW1/4; also SW1/4 S1 43.1141 -103.0053 GPS Reading Vegetative N N 34 RM 246504 Kostel 2004 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene 1. Toxicodendron rydbergii (Small ex Rydb.) Greene
Annotated by Grace M. Kostel. RM-21546 B. E. Nelson 60570 Grace Kostel 14 5 2004 U.S.A. South Dakota Fall River Buffalo Gap National Grassland and Vicinity: along South Branch Blacktail Creek, ca 10.5 mi ESE of Oelrichs. Stream bottom and adjacent banks. 3100 3160 ft. 43.1452° N, 103.0362° W; GPS Reading T10S R9E S27 SE1/4 43.1452 -103.0362 GPS Reading Vegetative N N 35 RM 246635 Kostel 2004 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene 1. Toxicodendron rydbergii (Small ex Rydb.) Greene
Annotated by Grace M. Kostel. RM-21552 B. E. Nelson 60701 Grace Kostel 17 5 2004 U.S.A. Nebraska Dawes Oglala National Grassland and Vicinity: west end of Wolf Butte, ca 19.5 air mi N of Crawford. Ravine. 3950 4060 ft. 42.9653° N, 103.4629° W to 42.8603° N, 103.5542° W; GPS Reading T35N R52W S33 W1/2 42.9653 -103.4629 GPS Reading Vegetative N N 36 RM 246678 Kostel 2004 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene 1. Toxicodendron rydbergii (Small ex Rydb.) Greene
Annotated by Grace M. Kostel. RM-21554 B. E. Nelson 60744 Grace Kostel 17 5 2004 U.S.A. Nebraska Dawes Oglala National Grassland and Vicinity: S of Sugarloaf or Forest Road 900, just E and NE of Strawstack Butte, ca 16.5 air mi NNE of Crawford. Chalky bluffs and slopes. 3740 3900 ft. 42.9188° N, 103.4733° W to 42.9139° N, 103.4717° W; GPS Reading T34N R52W S17 S1/4; also N1/2 S20 42.9188 -103.4733 GPS Reading Fruiting N N 37 RM 246798 Kostel 2004 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene 1. Toxicodendron rydbergii (Small ex Rydb.) Greene
Annotated by Grace M. Kostel. RM-21560 B. E. Nelson 60863 Grace Kostel 19 5 2004 U.S.A. South Dakota Custer Buffalo Gap National Grassland and Vicinity: mesa ca 2 1/4 air mi S of French Creek and ca 3/4-1 air mi E of South Fork French Creek, ca 16 air mi SE of Hermosa. Skunkbush/chokecherry/current thickets on the slopes. 3150 3250 ft. 43° 38.1' N, 103° 1.99' W; GPS Reading T5S R9E S10 NE1/4 43.635 -103.033167 GPS Reading Vegetative N N 38 RM 246936 Kostel 2004 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene 1. Toxicodendron rydbergii (Small ex Rydb.) Greene
Annotated by Grace M. Kostel. RM-21569 B. E. Nelson 61000 Grace Kostel 24 5 2004 U.S.A. South Dakota Fall River Buffalo Gap National Grassland and Vicinity: along Horsehead Creek, ca 3 air mi W of U.S. Hwy 385, ca 9 air mi SSW of Oelrichs. Stream banks and channel. 3480 ft. 43.0565° N, 103.2884° W; GPS Reading T11S R7E S33 NE1/4 43.0565 -103.2884 GPS Reading Vegetative N N 39 RM 247257 Kostel 2004 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-21586 Grace M. Kostel 1212 2 6 2004 U.S.A. South Dakota Pennington Buffalo Gap National Grassland and Vicinity: ca 4.5-5 air mi SE of Wall, 2-2.5 mi S of I-90, channel draining into Whitewater Creek.. On badlands in deep channel draining into creek; soils of white, heavy clays. 2650 2750 ft. 43° 55.73' N, 102° 11.09' W; GPS Reading T1S R16E S27 E1/2 43.928833 -102.184833 GPS Reading Buds N N 40 RM 247424 Kostel 2004 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-21588 Grace M. Kostel 1364 4 6 2004 U.S.A. South Dakota Custer Buffalo Gap National Grassland and Vicinity: ca 7 air mi ESE of Fairburn and 0.5 mi N of County Road 18. Abandoned gravel pit of revegetated upland grassy areas; rock and gravel soil. 3050 3150 ft. 43° 39.61' N, 103° 4.53' W; GPS Reading T4S R9E S32; W1/2 S13 43.660167 -103.0755 GPS Reading Vegetative N N 41 RM 247476 Kostel 2004 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-21592 Grace M. Kostel 1411 4 6 2004 U.S.A. South Dakota Custer Buffalo Gap National Grassland and Vicinity: ca 19 air mi SE of Hermosa. Draw of clay soil. 3050 ft. 43° 41.75' N, 102° 52.59' W to 43° 41.53' N, 102° 52.63' W; GPS Reading T4S R10E S13 W1/2 43.695833 -102.8765 GPS Reading Flowering N N 42 RM 247510 Kostel 2004 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-21593 Grace M. Kostel 1441 4 6 2004 U.S.A. South Dakota Custer Buffalo Gap National Grassland and Vicinity: ca 10-10.5 air mi ESE of Fairburn, S of County Road 18 in French Creek. In clay soil along creek and creek banks. 2900 ft. 43° 39.16' N, 103° 0.5' W; GPS Reading T4S R9E S35 South1/2 43.652667 -103.008333 GPS Reading Vegetative N N 43 RM 247740 Kostel 2004 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-21605 Grace M. Kostel 1650 7 6 2004 U.S.A. Nebraska Sioux Oglala National Grassland and Vicinity: ca 7-7.5 air mi NW of Crawford. On pine ridge of gravel and sand; pine woodland. 3900 4000 ft. 42° 45' N, 103° 30.72' W; GPS Reading T32N R53W S11 NE1/4 42.75 -103.512 GPS Reading Vegetative N N 44 RM 248019 Kostel 2004 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-21612 Grace M. Kostel 1901 11 6 2004 11 June 2004 U.S.A. South Dakota Fall River Buffalo Gap National Grassland and Vicinity: ca 8-8.5 air mi NW of Edgemont and 3 mi W of County Road 9. On mesa tops and slopes; sand and rock soil. 3650 3800 ft. 43° 21.09' N, 103° 58.48' W to 43° 21.32' N, 103° 58.48' W; GPS Reading T8S R1E S14 W1/2 43.3515 -103.974667 GPS Reading Vegetative N N 45 RM 248103 Kostel 2004 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-21615 Grace M. Kostel 1978 11 6 2004 U.S.A. South Dakota Fall River Buffalo Gap National Grassland and Vicinity: ca 5.5-6 air mi SW of Edgemont. On juniper ridges of rock and shale. 3650 3850 ft. 43.2528° N, 103.9264° W; uncertainty 0.5 mi. T9S R2E S19 N1/2 43.2528 -103.9264 1 mi. Flowering N N 46 RM 248404 Kostel 2004 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-21625 Grace M. Kostel 2250 14 6 2004 U.S.A. Nebraska Sioux Oglala National Grassland and Vicinity: ca 27.5-28 air mi NW of Crawford. On ridge of rockand sand. 3850 3950 ft. 42° 53.71' N, 103° 52.59' W; GPS Reading T34N R56W S25 NW1/4 42.895167 -103.8765 GPS Reading Vegetative N N 47 RM 248610 Kostel 2004 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-21633 Grace M. Kostel 2438 21 6 2004 U.S.A. South Dakota Pennington Buffalo Gap National Grassland and Vicinity: ca 14.5-15 air mi ENE of Hermosa and 4 air mi WSW of Railroad Buttes. On ridge of rock and gravel. 3100 3200 ft. 42° 52.91' N, 102° 55.05' W; GPS Reading T2S R10E S15 South1/2 42.881833 -102.9175 GPS Reading Fruiting N N 48 RM 248849 Kostel 2004 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-21640 Grace M. Kostel 2653 26 6 2004 U.S.A. South Dakota Custer Buffalo Gap National Grassland and Vicinity: ca 17 air mi SSE of Hermosa. On ridge of rock and slopes and upland of clay soil. 2950 3100 ft. 43° 40.67' N, 102° 56.9' W; GPS Reading T4S R10E S20 SE1/4 43.677833 -102.948333 GPS Reading Vegetative N N 49 RM 248975 Kostel 2004 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-21642 Grace M. Kostel 2767 25 6 2004 U.S.A. South Dakota Custer Buffalo Gap National Grassland and Vicinity: ca 17-17.5 air mi SE of Hermosa and 1.5-2 mi NNW of Red Shirt and 1-1.5 mi W of SD Hwy 40. In draws and on ridge tops. 2800 2950 ft. 43° 41.63' N, 102° 54.4' W; GPS Reading T4S R10E S22; NE1/4 43.693833 -102.906667 GPS Reading Vegetative N N 50 RM 249005 Kostel 2004 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-21643 Grace M. Kostel 2794 25 6 2004 U.S.A. South Dakota Custer Buffalo Gap National Grassland and Vicinity: ca 19-19.5 air mi SE of Hermosa and 2 air mi SW of Red Shirt and 0.5 miW of SD Hwy 40. In prarie dog town with soils of silt and clay. 2900 2950 ft. 43° 40.59' N, 102° 53.41' W; GPS Reading T4S R10E S24 SW1/4 43.6765 -102.890167 GPS Reading Vegetative N N 51 RM 249275 Kostel 2004 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-21651 Grace M. Kostel 3036 28 6 2004 U.S.A. South Dakota Pennington Buffalo Gap National Grassland and Vicinity: ca 16.5 air mi ENE of Hermosa and 0.5 mi W of County Road 121. On butte and butte slopes of clay and gravel soil. 3050 3200 ft. 43° 51.57' N, 102° 51.36' W; GPS Reading T2S R10E S24 SE1/4 43.8595 -102.856 GPS Reading Fruiting N N 52 RM 249429 Kostel 2004 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-21654 Grace M. Kostel 3175 2 7 2004 U.S.A. South Dakota Fall River Buffalo Gap National Grassland and Vicinity: ca 12.5-13 air mi WNW of Edgemont immediately E of Wyoming/South Dakota stateline. North of the Cheyenne River. In silt and revegetated, stabilized banks of sand north of the river. Area is severely overgrazed. 3900 3950 ft. 43° 22.74' N, 104° 3.61' W; GPS Reading T8S R1E S6 SW1/4 43.379 -104.060167 GPS Reading Vegetative N N 53 RM 249497 Kostel 2004 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-21655 Grace M. Kostel 3237 2 7 2004 U.S.A. South Dakota Custer Buffalo Gap National Grassland and Vicinity: ca 14.5-15 air mi SE of Hermosa and 2.4 mi N of County Road 18. Rock slopes and buttes of Juniper leading into clay based drainages. 2800 3100 ft. 43° 42.14' N, 103° 0.3' W to 43° 41.27' N, 102° 58.1' W to 43° 41.52' N, 102° 58.76' W; GPS Reading T4S R9E S24 N1/2; also SE1/4 S13 43.702333 -103.005 GPS Reading Vegetative N N 54 RM 249649 Kostel 2004 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-21660 Grace M. Kostel 3375 6 7 2004 U.S.A. Nebraska Dawes Oglala National Grassland and Vicinity: ca 18.5-19 air mi NNW of Crawford and just S of Forest Road 909. In Juniper horizontalis draw of rock, gravel and sand. 3850 3950 ft. 42° 56.73' N, 103° 27.05' W; GPS Reading T35N R52W S34 SW1/4 42.9455 -103.450833 GPS Reading Vegetative N N 55 RM 249844 Kostel 2004 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-21672 Grace M. Kostel 3551 11 7 2004 U.S.A. South Dakota Fall River Buffalo Gap National Grassland and Vicinity: ca 14 mi NNE of Smithwick and immediately S of the Fall River and Custer County lines. On ridgetop of sand and silt soils. 3000 3050 ft. 43° 28.26' N, 103° 4.15' W; GPS Reading T7S R9E S4 NW1/4 43.471 -103.069167 GPS Reading Vegetative N N 56 RM 249942 Kostel 2004 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-21662 Grace M. Kostel 364 B. E. Nelson 19 5 2004 U.S.A. South Dakota Custer Buffalo Gap National Grassland and Vicinity: between Shorty Draw and French Creek, ca 9 air mi E of Fairburn and 14.5 air mi SE of Hermosa. Ridge sideslopes. 3030 3080 ft. 43.6659° N, 103.0281° W; GPS Reading T4S R9E S27 SE1/4 43.6659 -103.0281 GPS Reading Vegetative N N 57 RM 250083 Kostel 2004 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-21679 Grace M. Kostel 3768 15 7 2004 U.S.A. Nebraska Sioux Oglala National Grassland and Vicinity: ca 12.5-13 air mi NW of Crawford. On rocky ridge and side slopes. 4500 4800 ft. 42° 48.18' N, 103° 37.59' W; GPS Reading T33N R53W S30 SW1/4 42.803 -103.6265 GPS Reading Vegetative N N 58 RM 250100 Kostel 2004 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-21680 Grace M. Kostel 3783 15 7 2004 U.S.A. Nebraska Sioux Oglala National Grassland and Vicinity: ca 12.5-13 air mi NW of Crawford. In deep drainage. 3700 4000 ft. 42° 49.69' N, 103° 34.97' W; GPS Reading T33N R53W S21 N1/2 42.828167 -103.582833 GPS Reading Vegetative N N 59 RM 250129 Kostel 2004 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-21678 Grace M. Kostel 381 B. E. Nelson 19 5 2004 U.S.A. South Dakota Custer Buffalo Gap National Grassland and Vicinity: 3 1/4 air mi W and 1 air mi N of Cheyenne River, 5.5 air mi WSW of Red Shirt. Sand side banks of vegetated, stabilized sand dunes. 2820 2920 ft. 43.637° N, 102.9958° W; GPS Reading T5S R9E S12 NW1/4 43.637 -102.9958 GPS Reading Vegetative N N 60 RM 250242 Kostel 2004 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-21683 Grace M. Kostel 3912 16 7 2004 U.S.A. South Dakota Pennington Buffalo Gap National Grassland and Vicinity: ca 22 air mi ENE of Hermosa and 1 mi W of Swinehart Hill on Rapid Creek. On the banks of the creek. 2600 ft. 43° 55.25' N, 102° 45.4' W; GPS Reading T1S R11E S35 N1/2 43.920833 -102.756667 GPS Reading Vegetative N N 61 RM 250339 Kostel 2004 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-21686 Grace M. Kostel 4000 16 7 2004 U.S.A. South Dakota Pennington Buffalo Gap National Grassland and Vicinity: ca 7.5 air mi W of Scenic, near Spring Draw. On sand bluffs overlooking draw. 2750 2800 ft. 43° 46.93' N, 102° 34.9' W; GPS Reading T3S R13E S16 SW1/4 43.782167 -102.581667 GPS Reading Vegetative N N 62 RM 250404 Kostel 2004 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-21684 Grace M. Kostel 406 B. E. Nelson 19 5 2004 U.S.A. South Dakota Custer Buffalo Gap National Grassland and Vicinity: County Road 18 N of French Creek and 11/4 air mi W of Cheyenne River about 3 air mi WSW of Red Shirt, ca 18 mi SE of Hermosa. Upslope of side drainage into creek. 2770 2870 ft. 43.6505° N, 102.9544° W; GPS Reading T5S R10E S5 NE1/4 43.6505 -102.9544 GPS Reading Flowering N N 63 RM 250601 Kostel 2004 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-21697 Grace M. Kostel 4239 29 7 2004 U.S.A. South Dakota Custer Buffalo Gap National Grassland and Vicinity: ca 8.5 air mi SE of Hermosa in Red Shirt Creek. In drainage of creek and steep slopes of drainage; soils are rock substrate with clayey silt. 2850 3100 ft. 43° 42.75' N, 102° 55.11' W to 43° 41.19' N, 102° 55.03' W; GPS Reading T4S R10E S16 E1/2 43.7125 -102.9185 GPS Reading Vegetative N N 64 RM 250646 Kostel 2004 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-21691 Grace M. Kostel 428 B. E. Nelson 19 5 2004 U.S.A. South Dakota Custer Buffalo Gap National Grassland and Vicinity: County Road 18, ca 2 air mi E of Fairburn. Along road and roadside ditch. 3240 ft. 43.6774° N, 103.1756° W; GPS Reading T4S R8E S28 NW1/4 43.6774 -103.1756 GPS Reading Vegetative N N 65 RM 250709 Kostel 2004 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-21702 Grace M. Kostel 4337 Steve Popovich 3 8 2004 U.S.A. South Dakota Custer Buffalo Gap National Grassland and Vicinity: ca 15.5-16 air mi SSE of Hermosa, French Creek. Along banks of creek. Soils are silty and mucky in creek bottom. 3050 ft. 43.6349° N, 103.0618° W; GPS Reading T5S R9E S9 NE1/4 43.6349 -103.0618 GPS Reading Vegetative N N 66 RM 251359 Kostel 2004 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-21717 Grace M. Kostel 502 B. E. Nelson 21 5 2004 U.S.A. South Dakota Fall River Buffalo Gap National Grassland and Vicinity: canyon N of Moss Agate Creek ca 0.5 - 1 mi S of County Road 9C, 10.5 -11 air mi NW of Edgemont. Draw and draw bank edges. 3700 3880 ft. 43.3656° N, 104.0238° W to 43.3595° N, 104.0156° W; GPS Reading T8S R1E S8 SW1/4; also NE1/4 of NE1/4 S17 43.3656 -104.0238 GPS Reading Vegetative N N 67 RM 251680 Kostel 2004 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-21742 Grace M. Kostel 793 28 5 2004 U.S.A. South Dakota Fall River Buffalo Gap National Grassland and Vicinity: ca 8.5 air mi WNW of Edgemont and 2.5 air mi N of U.S. Hwy 18 in side drainage of Moss Agate Creek. Top of slope. 3700 3800 ft. 43° 20.5' N, 104° 1.16' W; GPS Reading T8S R1E S15 SW1/4 43.341667 -104.019333 GPS Reading Buds N N 68 RM 252039 Kostel 2005 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-21767 Grace M. Kostel 4983 27 5 2005 U.S.A. South Dakota Pennington Buffalo Gap National Grassland and Vicinity: ca 19.5-20 air mi SSW of Wall. On a mesa top and northeast facing slopes, soils are sand. 2650 2700 ft. 43° 42.723' N, 102° 18.929' W; GPS Reading T4S R15E S10 W1/2 43.71205 -102.315483 GPS Reading Vegetative N N 69 RM 252273 Kostel 2005 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-21775 Grace M. Kostel 5215 30 5 2005 U.S.A. South Dakota Pennington Buffalo Gap National Grassland and Vicinity: ca 1 air mi SSE of Wall and adjacent to the Badlands National Park boundary line fence. Badlands cliffs; upland soils are of clay loam with cliff edges eroding into clay layers. 3000 3050 ft. 43° 53.23' N, 102° 13.81' W; GPS Reading T2S R16E S8 N1/2 43.887167 -102.230167 GPS Reading Vegetative N N 70 RM 252356 Kostel 2005 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-21778 Grace M. Kostel 5298 30 5 2005 U.S.A. South Dakota Pennington Buffalo Gap National Grassland and Vicinity: ca 9 air mi ESE of Scenic and 1 air mi S of SD Hwy 44 on Bouquet Table. In a Hesperostipa comata upland plant community in silt-loam soils at edge of table overlooking badlands floodplain. 2700 ft. 43° 42.52' N, 102° 18.86' W; GPS Reading T4S R15E S10 NE1/4 43.708667 -102.314333 GPS Reading Flowering N N 71 RM 252657 Kostel 2005 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-21791 Grace M. Kostel 5597 6 6 2005 U.S.A. Nebraska Dawes Oglala National Grassland and Vicinity: ca 12-12.5 air mi SE of Ardmore, South Dakota. In rock bed with silt and clay soils. 3949 ft. 42° 57.052' N, 103° 28.018' W; GPS Reading T34N R52W S5 E1/2 42.950867 -103.466967 GPS Reading Vegetative N N 72 RM 252890 Kostel 2005 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-21803 Grace M. Kostel 5829 11 6 2005 U.S.A. South Dakota Pennington Buffalo Gap National Grassland and Vicinity: near Cottonwood Creek, ca 2.5 air mi SE of Quinn on an abandoned county road now known as Forest Road 7117. In side drainage of creek in soils of silty loam. 2781 ft. 43° 57.94' N, 102° 4.97' W; GPS Reading T1S R17E S9 SE1/4 43.965667 -102.082833 GPS Reading Vegetative N N 73 RM 252904 Kostel 2005 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-21804 Grace M. Kostel 5843 11 6 2005 U.S.A. South Dakota Jackson Buffalo Gap National Grassland and Vicinity: ca 4.5-5 air mi SE of Cottonwood on Forest Road 7178, S of County Road 26. In drainage course between two reservoirs, soils are silty clay. 2403 ft. 43° 57.33' N, 102° 48.378' W; GPS Reading T1S R19E S14 SE1/4 43.9555 -102.8063 GPS Reading Vegetative N N 74 RM 252930 Kostel 2005 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-21805 Grace M. Kostel 5869 11 6 2005 U.S.A. South Dakota Pennington Buffalo Gap National Grassland and Vicinity: near Cottonwood Creek, ca 11 air mi ESE of Wall on an abandoned county roadbed now known as Forest Road 7117. In side drainage of creek in soils of silty loam. 2513 ft. 43° 57.952' N, 102° 1.749' W; GPS Reading T1S R17E S13 N1/2 43.965867 -102.02915 GPS Reading Vegetative N N 75 RM 252983 Kostel 2005 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-21810 Grace M. Kostel 5922 11 6 2005 U.S.A. South Dakota Jackson Buffalo Gap National Grassland and Vicinity: ca 3 air mi SW of Cottonwood on County Road CS24. On rolling prairie uplands in silty loam soils. 2651 ft. 43° 56.7' N, 101° 57.56' W; GPS Reading T1S R18E S22 South1/2 43.945 -101.959333 GPS Reading Vegetative N N 76 RM 252996 Kostel 2005 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-21811 Grace M. Kostel 5935 11 6 2005 U.S.A. South Dakota Jackson Buffalo Gap National Grassland and Vicinity: ca 2 air mi due W of Cottonwood. On abandoned county road in gravel and sand hilltop. 2577 ft. 43° 57.942' N, 101° 57.422' W; GPS Reading T1S R18E S15 SW1/4 43.9657 -101.957033 GPS Reading Vegetative N N 77 RM 253018 Kostel 2005 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-21811 Grace M. Kostel 5957 11 6 2005 U.S.A. South Dakota Jackson Buffalo Gap National Grassland and Vicinity: ca 2 air mi due W of Cottonwood. On abandoned county road in gravel and sand hilltop. 2577 ft. 43° 57.942' N, 101° 57.422' W; GPS Reading T1S R18E S15 SW1/4 43.9657 -101.957033 GPS Reading Vegetative N N 78 RM 26379 Arizona/New Mexico USFS 512371 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene 1. Toxicodendron rydbergii (Small ex Rydb.) Greene
Annotated by Ivar Tidestrom. RM-5160 H. D. Burrall 365 1 7 1909 U.S.A. Arizona Coconino Coconino National Forest. West slope, among cliffs. 6700 ft. T20N R7E S29 35.0893 -111.683 NAD 83 9 mi. N N Nat. Geog. TOPO! Coconino/Yavapai counties. Fruiting N N 79 RM 266436 Larson 2006 RM 949207 RM0153983 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-22291 Jill E. Larson 4885 18 5 2006 U.S.A. New Mexico Rio Arriba Carson National Forest and Vicinity: east rim of Rio Grande from NM Hwy 68 SE toward Canada de Apodaca, ca 0.5 air mi NE of Rinconada. Area around flowing spring, surrounded by pinyon/juniper woodland. 6050 6350 ft. 36.2236° N, 105.8635° W; GPS Reading T23N R10E S15 SE1/4; also NW1/4 S14 36.2236 -105.8635 GPS Reading Flowering and Fruiting N RM0153983 N 80 RM 27053 Arizona/New Mexico RM 164878 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene Toxicodendron rydbergii (Small ex Rydb.) Greene
Annotated by William T. Gillis in 1968. RM-5542 J. C. Blumer 1325 1 7 1907 U.S.A. Arizona Cochise Chiricahua Mountains: Chaperon Canyon. Narrow, shady gulch. 7900 ft. T17S R30E S33 31.9142 -109.28589 NAD 83 1 mi. N N Nat. Geog. TOPO! Flowering and Fruiting N N 81 RM 271843 Larson 2006 RM 949249 RM0154152 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-22418 Ronald L. Hartman 81993 22 5 2006 U.S.A. New Mexico Taos Carson National Forest and Vicinity: ca 1.5 mi SW on NM Hwy 68 from NM Hwy 75, ca 0.5 mi SW along Rio Grande. Roadside to river edge. 5850 ft. 36.2114° N, 105.938° W; GPS Reading T23N R9E S24 36.2114 -105.938 GPS Reading Flowering N RM0154152 N 82 RM 271983 Larson 2006 RM 949206 RM0153984 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-22421 Ronald L. Hartman 82133 22 5 2006 U.S.A. New Mexico Rio Arriba Carson National Forest and Vicinity: NM Hwy 68, just south of Taos county line. 6540 ft. 36.1725° N, 105.831° W; GPS Reading T23N R10E S15 36.1725 -105.831 GPS Reading Flowering N RM0153984 N 83 RM 274647 Lum 2002 RM 803797 RM0097639 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-22528 B. E. Nelson 57467 14 7 2002 U.S.A. Wyoming Washakie Bighorn Basin: ridge leading NW off Lightning Ridge on the Nowater Trail or BLM Road 1404, ca 10 air mi SW of Big Trails; ca 36 air mi SE of Worland. Bottom of small canyon below a spring. 5460 5500 ft. 43.6647° N, 107.4604° W; uncertainty 0.5 mi. T43N R88W S30 NE1/4 43.6647 -107.4604 1 mi. Fruiting N RM0097639 N 84 RM 280503 Lyon 1993 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-22712 Margarette J. Lyon 1655 18 6 1993 U.S.A. Colorado Montrose San Miguel and lower Dolores River Drainages: San Miguel River Drainage: along Cottonwood Creek ca 1 mi ENE of Pinon. Riparian along creek with Populus and Salix, and adjacent dry grazed areas with oak. 6000 ft. 38.2701° N, 108.3803° W T46N R14W S2 38.2701 -108.3803 Flowering N N 85 RM 283155 Lyon 1994 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-22828 Margarette J. Lyon 3966 3 6 1994 U.S.A. Colorado Mesa San Miguel and Lower Dolores River Drainages: Uncompahgre Plateau: Indian Creek. Riparian area with Populus angustifolia, Cornus sericea, and Acer negundo. 6800 ft. 38.6267° N, 108.8037° W T50N R17W S6 38.6267 -108.8037 Flowering and Fruiting N N 86 RM 291295 Massatti 2005 USFS 842545 USFS0026101 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-23774 Rob Massatti 293 13 6 2005 U.S.A. Wyoming Fremont East Slope Wind River Range and Vicinity: southeast side of Fairfield Hill, ca 6 air mi SW of Lander. Juniper woodland/sagebrush grassland on steep slopes beneath limestone cliffbands. 7400 8120 ft. 42.7405° N, 108.8389° W to 42.7442° N, 108.845° W; GPS Reading T32N R101W S13 South1/2 42.7405 -108.8389 NAD 83 GPS Reading Vegetative N USFS0026101 N 87 RM 293108 Massatti 2005 USFS 842546 USFS0026102 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-23697 Rob Massatti 58 10 6 2005 U.S.A. Wyoming Fremont East Slope Wind River Range and Vicinity: Deep Creek drainage and vicinity, ca 16 air mi SSE of Lander. Steep south-facing slope predominantly Purshia tridentata and Artemisia tridentata var. vaseyana grassland. 7090 7320 ft. 42.6062° N, 108.666° W; GPS Reading T30N R99W S4 NE1/4; also NW1/4 S3 and T31N R99W S33 SE1/4 and SW1/4 S34 42.6062 -108.666 NAD 83 GPS Reading Flowering N USFS0026102 N 88 RM 293710 Massatti 2006 USFS 842544 USFS0026100 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-23873 Rob Massatti 4542 23 5 2006 U.S.A. Wyoming Fremont East Slope Wind River Range and Vicinity: south ridge of Sheep Canyon, ca 4.5 air mi SW of Lander. Rocky mixed shrubland and grassland on limestone. 6070 7850 ft. 42.758° N, 108.799° W to 42.7485° N, 108.8233° W; GPS Reading T32N R100W S8; also W1/2 S9 and NE1/4 S18 42.758 -108.799 NAD 83 GPS Reading Vegetative N USFS0026100 N 89 RM 293892 Massatti 2006 USFS 842543 USFS0026099 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-23875 Rob Massatti 4724 25 5 2006 U.S.A. Wyoming Fremont East Slope Wind River Range and Vicinity: ca 3 mi SW of Weiser Knoll; ca 15 air mi SSE of Lander. Rocky meadow on limestone. 6780 7130 ft. 42.6015° N, 108.6259° W to 42.6291° N, 108.6488° W; GPS Reading T30N R99W S2 N1/2; also NE1/4 S3 and T31N R99W S34, S27 and W1/2 S35 42.6015 -108.6259 NAD 83 GPS Reading Vegetative N USFS0026099 N 90 RM 294914 Massatti 2006 USFS 842542 USFS0026098 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-23887 Rob Massatti 5738 21 6 2006 U.S.A. Wyoming Fremont East Slope Wind River Range and Vicinity: Sawmill Creek near Middle Popo Agie River, ca 5 air mi SW of Lander. Sagebrush shrubland. 6100 6260 ft. 42.7554° N, 108.7941° W to 42.7507° N, 108.7963° W; GPS Reading T32N R100W S9 SW1/4; also NW1/4 S16 42.7554 -108.7941 NAD 83 GPS Reading Flowering N USFS0026098 N 91 RM 312886 Moore 1995 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-24828 Lynn Marie Moore 5558 17 6 1995 U.S.A. Colorado Montrose Upper Dolores River Drainage and Adjacent Areas: ca 21 air mi WNW of Naturita along La Sal Creek at the Cliff Dweller Mine, County Road X4, SE of Colo. Hwy 90. Boxelder, Fraxinus, pinyon-juniper, ponderosa, and poison ivy; riparian zone along creek and north facing canyon slopes and walls. 5600 ft. 38.314° N, 108.9715° W T47N R19W S21; also S22 38.314 -108.9715 Fruiting N N 92 RM 313301 Moore 1995 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-24838 Lynn Marie Moore 5968 22 6 1995 U.S.A. Colorado Dolores Upper Dolores River Drainage and Adjacent Areas: ca 4 air mi NE of Dove Creek near Dove Creek Pump Station along the Dolores River, County Road 10.00. Riparian area and canyon slopes with Rhus, Quercus, ponderosa, pinyon-juniper, Apocynum, poison ivy, and boxelder; east facing slope. 6000 6100 ft. 37.8284° N, 108.8009° W T41N R18W S12; also S14 and S23 37.8284 -108.8009 Fruiting N N 93 RM 320852 Newton 2005 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-25103 Rachel Newton 3024 3 8 2005 U.S.A. Wyoming Carbon Wetlands and Adjacent Areas: Morgan Creek, ca 30 air mi NE of Rawlins. Dry uplands. 6362 ft. 42.1618° N, 106.9235° W; GPS Reading T25N R84W S5 SW1/4 42.1618 -106.9235 NAD 83 GPS Reading Fruiting N N 94 RM 33296 Arizona/New Mexico RM 55568 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene Toxicodendron rydbergii (Small ex Rydb.) Greene
Annotated by William T. Gillis in 1968. RM-8903 O. B. Metcalfe 339 2 8 1903 U.S.A. New Mexico Catron Mogollon Mountains: on or near West Fork Gila River. 7500 ft. T11S R16W S21 33.3237 -108.51279 NAD 83 5 mi. N Y Nat. Geog. TOPO! Fruiting N N 95 RM 335079 Nunn 2001 RM 765864 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-29737 Sarah Nunn 733 1 6 2001 U.S.A. Colorado Larimer Roosevelt National Forest: Front Range: Young Gulch Trail on Colo Hwy 14, 1 mi from trailhead, ca 13 air mi NW of Fort Collins. Wet creekside with Thermopsis and Salix leading up to a dry hillside with Cercocarpus and Lesquerella. 6000 6400 ft. 40.6909° N, 105.3543° W; uncertainty 0.5 mi. T8N R71W S4 SE1/4 40.6909 -105.3543 1 mi. Fruiting N N 96 RM 337282 Porter RM 207434 RM0215625 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-30598 C. L. Porter 4415 10 9 1947 U.S.A. Wyoming Platte Palmer Canyon: 15 mi W of Wheatland. Sprawling on the ground in aspen woods. 5300 ft. 42.0583° N, 105.2275° W; NAD 83, uncertainty 1 mi., Digital Map T24N R70W S15 42.0583 -105.2275 NAD 83 1 mi. Digital Map Located 15 miles west of Wheatland on Palmer Canyon Road, north side of Luman Creek, on WY Road 204; geo-locate.org. EL Vegetative N RM0215625 N 97 RM 338765 Porter RM 222610 RM0215628 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-31185 C. L. Porter 5752 12 7 1951 U.S.A. Wyoming Washakie At the lower end of Tensleep Canyon. Common in canyon. 5400 ft. 44.0804° N, 107.3141° W; NAD 83, uncertainty 1 mi., Digital Map T48N R87W S33 44.0804 -107.3141 NAD 83 1 mi. Digital Map Located at the Leigh Creek Campground, along Tensleep Creek and just off of Forest Service Road 18 (the old highway); near the far western side of the canyon; geo-locate.org. EL Vegetative N RM0215628 N 98 RM 341249 Porter RM 262973 RM0215629 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-32361 C. L. Porter 8247 Marjorie W. Porter 28 6 1960 U.S.A. Wyoming Washakie Big Horn Range: lower end of Tensleep Canyon. Plants sprawling. 5000 ft. 44.0732° N, 107.3395° W; NAD 83, uncertainty 1 mi., Digital Map T47N R87W S5 44.0732 -107.3395 NAD 83 1 mi. Digital Map Located at the bottom of Tensleep Canyon on US Hwy 16, near Circle J Ranch; on the north side of Tensleep Creek; geo-locate.org. EL Vegetative N RM0215629 N 99 RM 341371 Porter RM 262965 RM0215624 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-32422 C. L. Porter 8525 Marjorie W. Porter 20 8 1960 U.S.A. Wyoming Carbon In the canyon below Seminoe Dam on the North Platte River. Common among rocks in brushy places. 6900 ft. 42.1589° N, 106.9087° W; NAD 83, uncertainty 0.5 mi., Digital Map T25N R84W S5 42.1589 -106.9087 NAD 83 1 mi. Digital Map Located on road below the dam (north side) within the canyon; on the west side of Kortes Reservoir; ca 0.25 air miles NE of Seminoe Dam, the town, based on the Seminoe Dam map of 1953; geo-locate.org. EL Fruiting N RM0215624 N 100 RM 342244 Reif 2002 RM 805543 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-32795 Brian Reif 1183 23 6 2003 U.S.A. New Mexico Sandoval Santa 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. Canyon bottom and riparian. 7200 8280 ft. 35° 46.764' N, 106° 26.194' W to 35° 45.872' N, 106° 25.593' W; GPS reading T18N R5E S19 NE1/4; also W1/2 S20 and NE1/4 S29 35.7794 -106.436567 GPS reading Flowering N N 101 RM 342340 Reif 2002 RM 805545 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-32790 Brian Reif 127 2 6 2002 U.S.A. New Mexico Sandoval Santa Fe National Forest and Vicinity: Jemez Mountains: NM Hwy 126 at Horseshoe Spring, NW 0.3 air mi to rim of Eureka Mesa. Steep slope of Gambels oak on soft red beds. 7900 8400 ft. 35° 59.694' N, 106° 52.703' W; GPS reading T20N R1E S6 NE1/4 35.9949 -106.878383 GPS reading Vegetative N N 102 RM 343257 Reif 2002 RM 805542 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-32828 Brian Reif 2086 11 7 2002 U.S.A. New Mexico Rio Arriba Santa 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. Steep-walled drainage of mixed conifers. 6700 6900 ft. 36° 24.844' N, 106° 45.119' W; GPS reading T25N R2E S8; also NW1/4 S17 36.414067 -106.751983 GPS reading Fruiting N N 103 RM 343620 Reif 2002 RM 805541 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-32841 Brian Reif 2454 17 7 2002 U.S.A. New Mexico Sandoval Santa Fe National Forest and Vicinity: Jemez Mountains: Rito de las Vacas and campground off NM Hwy 126, 9 air mi E of Cuba. From campground 0.6 air mi along Rito Vacas, then exiting west slope and returning to start. Riparian and grassy banks at campground. 8300 8700 ft. 35° 59.7923' N, 106° 48.415' W; GPS reading T20N R1E S2 NW1/4; also T21N R1E SW1/4 S35 35.996538 -106.806917 GPS reading Fruiting N N 104 RM 344006 Reif 2002 RM 805540 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-32859 Brian Reif 2800 28 7 2002 U.S.A. New Mexico San Miguel Santa Fe National Forest and Vicinity: Sangre de Cristo Mountains: Rio Mora, 2 air mi S of Cowles. NE 0.6 air mi along river on Trail 240 from parking lot in Mora River Campground. Mixed conifer forest with grass/sedge understory. 7900 8000 ft. 35° 46.744' N, 105° 39.355' W; GPS reading T18N R12E S22 NE1/4; also NW1/4 S23 and SW1/4 S14 35.779067 -105.655917 GPS reading Fruiting N N 105 RM 344670 Reif 2002 RM 805507 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-32877 Brian Reif 3396 6 8 2002 U.S.A. New Mexico Santa Fe Santa 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. Wet to dry meadow and riparian with canyon constricting to the W. 7760 ft. 35° 40.269' N, 105° 44.472' W; GPS reading T17N R11E S26 E1/2 35.67115 -105.7412 GPS reading Flowering N N 106 RM 345191 Reif 2002 RM 805506 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-32892 Brian Reif 3865 13 8 2002 U.S.A. New Mexico San Miguel Santa Fe National Forest and Vicinity: Sangre de Cristo Mountains: Forest Road 263 along Gallinas Creek, 16 air mi NW of Las Vegas. From Fishing Hole Picnic Area 0.3 mi in both directions along creek. Canyon bottom roadside, riparian, and bluffs of volcanic rock in mixed conifer forest. 7750 ft. 35° 42.495' N, 105° 27.031' W; GPS reading T17N R14E S15 N1/2 35.70825 -105.450517 GPS reading Fruiting N N 107 RM 346020 Reif 2002 RM 805544 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-32914 Brian Reif 556 11 6 2002 U.S.A. New Mexico Sandoval Santa Fe National Forest and Vicinity: Jemez Mountains: Battleship Rock Forest Recreation Site, 2.8 air mi S of La Cueva, following Trail 137 on East Fork Jemez River for 0.7 mi. Riparian in steep-walled forested canyon of ponderosa pine/Douglas fir. 6755 7000 ft. 35° 49.741' N, 106° 38.733' W to 35° 49.37' N, 106° 38.18' W; GPS reading T19N R3E S5 N1/2 35.829017 -106.64555 GPS reading Flowering N N 108 RM 348660 Reif 2003 RM 805505 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-33001 Brian Reif 4839 2 6 2003 U.S.A. New Mexico San Miguel Santa Fe National Forest and Vicinity: Sangre de Cristo Mountains: on NM Hwy 3 along Pecos River W of Villanueva State Park, 10 air mi SSE of I-25/NM Hwy 3 junction. Roadside corridor with pinyon/juniper woodland on sedimentary slope to north; irrigation ditch and riparian of cottonwood, Russian olive to south. 5800 ft. 35.2724° N, 105.3714° W; GPS Reading T12N R15E S17 N1/2 35.2724 -105.3714 GPS Reading Vegetative N N 109 RM 349294 Reif 2003 RM 805504 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-33021 Brian Reif 5471 16 6 2003 U.S.A. New Mexico Sandoval Santa Fe National Forest and Vicinity: Jemez Mountains: Dome Wilderness: Capulin Canyon below Los Utes Spring, 2 air mi W of Bandelier National Monument. Riparian and canyon bottom through burn and with thick deadfall; surrounding mixed conifer forest with thick locust/Gambels oak stands below. 7360 7540 ft. 35.773° N, 106.386° W to 35.774° N, 106.399° W; GPS Reading T18N R5E S22 South1/2 35.773 -106.386 GPS Reading Flowering N N 110 RM 349656 Reif 2003 RM 805503 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-33033 Brian Reif 5831 23 6 2003 U.S.A. New Mexico Santa Fe Santa Fe National Forest and Vicinity: Sangre de Cristo Mountains: Pecos Wilderness: Rio Medio Trail 155 adjacent to Rio Medio, 6 air mi due W of Truchas Peak. SE 0.3 air mi along trail. Canyon bottom adjacent the river, or trailside lower slope of spruce forest. 8300 ft. 35.967° N, 105.764° W; GPS Reading T20N R11E S9 E1/4; also S15 35.967 -105.764 GPS Reading Flowering N N 111 RM 352646 Reif 2003 RM 805502 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-33139 Brian Reif 8817 18 8 2003 U.S.A. New Mexico San Miguel Santa Fe National Forest and Vicinity: Sangre de Cristo Mountains: Forest Road 60 along Sapello River, 2 air mi SW of Rociada; N35.8129 W105.4480 at corral NW 0.3 air mi to Surprise Valley Ranch at N35.8168 W105.4518. Roadside in canyon bottom and south-facing slope of mixed conifers/mature aspen; mostly ponderosa pine in exposed areas. 8000 ft. 35.8168° N, 105.4518° W to 35.8129° N, 105.448° W; GPS Reading T18N R14E S3 W1/2 35.8168 -105.4518 GPS Reading Fruiting N N 112 RM 353212 Reif 2003 RM 805501 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-33162 Brian Reif 9381 1 9 2003 U.S.A. New Mexico Sandoval Santa Fe National Forest and Vicinity: Jemez Mountains: Battleship Rock Trail 137 at McCauley Warm Springs, 5 air mi NNE of Jemez Springs. Warm springs and riparian drainage in ponderosa pine forest. 7300 7400 ft. 35.8222° N, 106.6281° W; GPS Reading T18N R3E S4 W1/2 35.8222 -106.6281 GPS Reading Fruiting N N 113 RM 355705 R Jones 1991 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-33250 Robin Jones 2096 Clay Lippencott 13 7 1991 U.S.A. Wyoming Hot Springs Owl Creek/Bridger Mountains: cliffs on east side of Wind River Canyon, ca 12 air mi SSE of Thermopolis; ca 20 air mi N of Shoshoni. Wet spring areas on west-facing slope. 4640 5800 ft. T6N R6E S15; also T41N R94W S21 and S28 N N 114 RM 357732 RMHERB1 RM 3958 RM0215622 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-34419 Aven Nelson 154 2 6 1894 U.S.A. Wyoming Laramie Pole Creek near Table Mountain. 7200 ft. 41.2684° N, 105.2205° W; uncertainty 2 mi. T15N R70W S15 41.2684 -105.2205 NAD 83 1 mi. Y Y Nat. Geog. TOPO! Pole Creek another name for Lodgepole Creek; mapped near Mesa Mountain. BEN Fruiting N RM0215622 N 115 RM 359099 RMHERB1 RM 3733 RM0215623 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-18476 Aven Nelson 557 15 7 1894 U.S.A. Wyoming Platte Hartville. 4700 4800 ft. 42.3271° N, 104.7273° W; NAD 83, uncertainty 0.75 mi., Nat. Geog. TOPO! T27N R66W S12 42.3271 -104.7273 NAD 83 1 mi. Y Y Nat. Geog. TOPO! BEN Fruiting N RM0215623 N 116 RM 361820 RMHERB1 RM 302016 RM0215619 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-36917 Barry Hammel 351 24 6 1976 U.S.A. Wyoming Laramie Ca 22 mi E of U.S. Hwy 85 along Chalk Bluffs Road, S of Cheyenne. Bluffs near microwave tower, along dry creek bed; in sandy soil in small ravines with Rosa arkansana, Rhus trilobata, and Delphinium geyeri. 5400 ft. 41.036° N, 104.4514° W; uncertainty 1 mi. T13N R63W S32 41.036 -104.4514 NAD 83 1 mi. N Y Nat. Geog. TOPO! TB Common. Vegetative N RM0215619 N 117 RM 364298 RMHERB1 RM 337638 RM0215627 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-38726 David L. Martin 1565 24 6 1981 24 Jun1981 U.S.A. Wyoming Washakie Rocky creek bank of Nowood River in Mahogany canyon. The streambank is mostly shrub thicket with Cornus stolonifera, Rosa woodsii, Salix, Ribes aureum, Rhus trilobata, and small trees including Acer negundo and Betula occidentalis. 5050 ft. 42.8732° N, 107.3528° W; uncertainty 0.25 mi. T34N R88W S35 NW1/4 of SE1/4 42.8732 -107.3528 0 mi. Flowering N RM0215627 N 118 RM 366082 RMHERB1 RM 12331 RM0215621 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-40012 Elias Nelson 4857 11 7 1898 U.S.A. Wyoming Carbon Freezeout Hills. 6900 8300 ft. 42.0823° N, 106.2737° W; uncertainty 9+ mi. T24N R79W S3 42.0823 -106.2737 9 mi. Flowering N RM0215621 N 119 RM 374350 RMHERB1 RM 268547 RM0215620 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-42401 Francis X. Jozwik 301 15 8 1962 U.S.A. Wyoming Natrona Casper Mountain area: just above Garden Creek Falls. On a talus slope of granite. 6900 ft. 42.7733° N, 106.3326° W; uncertainty 1 mi. T32N R79W S5 42.7733 -106.3326 1 mi. N Y Fruiting N RM0215620 N 120 RM 379287 RMHERB1 RM 544321 RM0215618 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-18706 Jan Pollet 617 2 9 1989 U.S.A. Wyoming Platte North Platte River: S of U.S. Hwy 26, 0.5 road mi S of Guernsey. 4340 ft. 42.2549° N, 104.7443° W; uncertainty 1 mi. T26N R66W S2 42.2549 -104.7443 1 mi. Vegetative N RM0215618 N 121 RM 381616 RMHERB1 RM 398837 RM0215617 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-46619 Karin M. Guernsey 150 11 9 1987 U.S.A. Wyoming Laramie Pine Bluffs: on northwest slope of bluffs, 5.7 air mi NNM of Pine Bluffs. Lush thicket and sagebrush/juniper community. 5220 ft. 41.2536° N, 104.1134° W; uncertainty 0.5 mi. T15N R60W S20 41.2536 -104.1134 1 mi. Vegetative N RM0215617 N 122 RM 396744 RMHERB1 RM 68834 RM0215626 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-57054 Vie Willits 188 28 6 1909 U.S.A. Wyoming Sheridan Upper Goose Creek Ditch. Sunny, semi-slidy ditch bank. 4300 ft. 44.6733° N, 107.0203° W; uncertainty 2 mi. T54N R84W S7 44.6733 -107.0203 2 mi. Y Y Flowering N RM0215626 N 123 RM 436396 South Dakota RM 99074 RM0215536 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-66426 A. C. McIntosh 676 14 9 1924 U.S.A. South Dakota Pennington Rapid City, Dark Canyon. Partially shaded hillsides. 3440 4700 ft. T1N R6E S14 44.0511 -103.3616 NAD 83 2 mi. Y Y Nat. Geog. TOPO! Fruiting N RM0215536 N 124 RM 436484 South Dakota RM 9235 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene Toxicodendron rydbergii (Small ex Rydb.) Greene
Annotated by William T. Gillis in 1968. RM-66468 Alice D. Pratt s.n. 6 1895 June 1895 U.S.A. South Dakota Meade Piedmont. 3490 ft. 44.2316° N, 103.389° W; uncertainty 1 mi. T3N R6E S10 44.2316 -103.389 1 mi. Y Y Flowering and Fruiting N N 125 RM 436875 South Dakota RM 99074 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene Toxicodendron rydbergii (Small ex Rydb.) Greene
Annotated by William T. Gillis in 1968. RM-66623 Arthur C. McIntosh 676 14 9 1924 U.S.A. South Dakota Pennington Rapid City: Dark Canyon. Partially shaded hillsides. 3440 4700 ft. 44.0527° N, 103.3115° W; uncertainty 2 mi. T1N R6E S14 44.0511 -103.3616 NAD 83 2 mi. Y Y Nat. Geog. TOPO! Fruiting N N 126 RM 43839 Baca 2004 RM 770744 RM0070193 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-12187 B. E. Nelson 61483 9 7 2004 U.S.A. New Mexico Sandoval Valles Caldera National Preserve: Jemez Mountains: along East Fork Jemez River, ca 3/4 - 1 air mi E of NM Hwy 4, ca 8 air mi NE of Jemez Springs; ca 15 air mi WSW of Los Alamos. Brushy south-facing slope with large volcanic outcrops. 7950 ft. 35.8289° N, 106.5768° W; GPS Reading 35.8289 -106.5768 GPS Reading Fruiting N RM0070193 N 127 RM 439016 South Dakota RM 106199 RM0215537 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-67687 Henry Lee 559 10 7 1925 U.S.A. South Dakota Pennington Rapid City. Hillsides. 3180 3410 ft. 44.0748° N, 103.2221° W; uncertainty 1 mi. T1N R7E S1 44.0748 -103.2221 1 mi. Fruiting N RM0215537 N 128 RM 441677 Jewel Cave RM 365344 RM0215539 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-68396 Hollis Marriott 9627 22 6 1985 U.S.A. South Dakota Custer Jewel Cave National Monument: Hell Canyon, side canyon on east side SE of old area. Side canyon on east side southeast of old area; canyon bottom with ponderosa pine and chokecherry. 5300 ft. 43.7328° N, 103.8407° W; uncertainty 0.5 mi. T4S R2E S2 NE1/4 43.7328 -103.8407 0 mi. N N Fruiting N RM0215539 N 129 RM 442515 South Dakota USFS 512364 USFS0069358 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-68876 Robert R. Hill 8 11 7 1928 U.S.A. South Dakota Pennington Harney National Forest: Battle Creek, below Everly Field. Shallow gravel soil; brush type. 4100 4200 ft. T2S R6E S10 43.8944 -103.3843 NAD 83 0 mi. Y Nat. Geog. TOPO! Flowering N USFS0069358 N 130 RM 443161 South Dakota RM 69869 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene Toxicodendron rydbergii (Small ex Rydb.) Greene
Annotated by William T. Gillis in 1968. RM-69208 S. S. Visher 244 11 7 1910 U.S.A. South Dakota Harding Little Missouri River Valley: 25 mi N of Ashcroft. [ends up in North Dakota] Open woods. 2900 3300 ft. T23N R1E S24 45.9448 -103.9365 NAD 83 5 mi. Y Y Nat. Geog. TOPO! Vegetative N N 131 RM 443212 South Dakota RM 76332 RM0215538 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-69253 S. S. Visher 2569 28 7 1911 U.S.A. South Dakota Fall River Could not be mapped. Locality noted on sheet, outside of label. Fruiting N RM0215538 N 132 RM 46031 Packer 1997 677754 RM0215604 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-12300 B. A. Packer 2487 J. Brondum and T. McGowan 30 7 1997 U.S.A. Wyoming Converse [location and coordinates withheld] Creekside 5900 6230 ft. Fruiting N RM0215604 N 133 RM 482154 So Rocky Mts USFS 512361 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-89846 E. R. Ware 64 14 1 1932 U.S.A. Colorado Garfield White River National Forest: Glenwood Canyon. Along creeks; level, sandy loam. 6100 ft. 39.5859° N, 107.2117° W; uncertainty 1 mi. T5S R88W S25 39.5859 -107.2117 1 mi. Fruiting N N 134 RM 48332 Packer 1997 677753 RM0215608 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-65 B. E. Nelson 41780 20 7 1997 U.S.A. Wyoming Natrona Laramie Range: east end of Casper Mountain, ca 2 air mi W of the Hat Six Hogback, ca 10 air mi SE of Casper. Sandstone? cliffs in open ponderosa pine. 6600 6900 ft. 42.7443° N, 106.1969° W T32N R78W S16 42.7443 -106.1969 Vegetative N RM0215608 N 135 RM 483944 So Rocky Mts RM 75747 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene Toxicodendron rydbergii (Small ex Rydb.) Greene
Annotated by William T. Gillis in 1937. RM-71357 Ernest P. Walker 498 18 8 1912 U.S.A. Colorado San Miguel Norwood Hill. Moist shaded north slope. 7000 ft. Flowering N N 136 RM 485929 So Rocky Mts RM 42996 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene Toxicodendron rydbergii (Small ex Rydb.) Greene
Annotated by William T. Gillis in 1968. RM-71983 Frank Tweedy 4946 7 1902 July 1902 U.S.A. Colorado Boulder Near Boulder. 5000 6000 ft. N Fruiting N N 137 RM 486731 So Rocky Mts RM 164876 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene Toxicodendron rydbergii (Small ex Rydb.) Greene
Annotated by William T. Gillis in 1968. RM-91491 George E. Osterhout 1725 11 8 1895 U.S.A. Colorado Weld New Windsor. Fruiting N N 138 RM 487893 So Rocky Mts RM 164875 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene Toxicodendron rydbergii (Small ex Rydb.) Greene
Annotated by William T. Gillis in 1968. RM-81060 George E. Osterhout 361 2 6 1894 U.S.A. Colorado Weld New Windsor. Flowering N N 139 RM 487909 So Rocky Mts RM 164877 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene Toxicodendron rydbergii (Small ex Rydb.) Greene
Annotated by William T. Gillis in 1968. RM-72318 George E. Osterhout 3631 22 8 1907 U.S.A. Colorado Larimer Canon of the Thompson: at the Forks. Vegetative N N 140 RM 49129 Packer 1997 677752 RM0215607 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-67 B. E. Nelson 42577 12 8 1997 U.S.A. Wyoming Albany Laramie Range: along Three Cripples Creek ca 1-1.5 air mi W of Harris Park or Forest Road 633, ca 1.5-2 air mi ESE of Esterbrook; ca 25 air mi S of Douglas. Open ponderosa pine forest on rocky southerly facing slope. 5560 5900 ft. 42.4131° N, 105.3324° W T28N R71W S11 SE1/4; also NW1/4 S13 and NE1/4 S14 42.4131 -105.3324 Fruiting N RM0215607 N 141 RM 491399 So Rocky Mts RM 344483 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-92399 Hans Beck 3612 Vlad Siplivinsky 5 6 1982 U.S.A. Colorado Montrose San Miguel River Canyon 14 mi W of Naturita. Open pinyon-juniper woodland on the south slope of the canyon. 5200 6200 ft. 38.314° N, 108.6944° W; uncertainty 1 mi. T47N R17W S24 38.314 -108.6944 1 mi. Flowering N N 142 RM 496611 So Rocky Mts RM 223006 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-84029 Paul C. Standley 4011 29 6 1908 U.S.A. New Mexico San Miguel Pecos River National Forest: Winsor Ranch. 8400 ft. 35.8179 -105.65749 NAD 83 1 mi. N N Nat. Geog. TOPO! Fruiting N N 143 RM 49677 Packer 1997 677751 RM0215606 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-12379 B. E. Nelson 43124 19 8 1997 U.S.A. Wyoming Natrona [location and coordinates withheld] Rocky areas. 6160 6320 ft. Vegetative N RM0215606 N 144 RM 499835 Philmont 1968 RM 296666 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-75352 Ronald L. Hartman 2739 21 8 1968 U.S.A. New Mexico Colfax Philmont Scout Ranch, near Cimarron: Fourmile Camp. South exposure. 7000 ft. 36.60179 -105.0155 NAD 83 1 mi. N N Nat. Geog. TOPO! Vegetative N N 145 RM 500457 So Rocky Mts Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-97038 Stanley A. Mahan 7 3 9 1942 U.S.A. Colorado Chaffee Cochetopa National Forest: mouth of Cottonwood canyon, rocky slope to south. 50% north slope, rocky clay soils, in Ponderosa pine and Douglas fir. 8200 ft. Vegetative N N 146 RM 50198 Packer 1997 677750 RM0215605 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-12389 Ronald L. Hartman 57873 Timothy W. Chumley 18 6 1997 U.S.A. Wyoming Albany [location and coordinates withheld] Calcareous area. 7200 7400 ft. Vegetative N RM0215605 N 147 RM 502402 So Rocky Mts RM 56840 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene Toxicodendron rydbergii (Small ex Rydb.) Greene
Annotated by William T. Gillis in 1968. RM-86889 W. W. Robbins 1607 20 6 1906 U.S.A. Colorado Boulder Gregory Canyon, near Boulder. Fruiting N N 148 RM 502995 So Rocky Mts RM 580992 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-98155 William A. Weber 18265 R. C. Witmann 13 7 1991 U.S.A. Colorado Baca Breaks of Picture Canyon. Sandy floodplain of creek, beside large boulders. 37.0247° N, 102.7514° W; uncertainty 2 mi. T35S R47W S6; also S7 37.0247 -102.7514 2 mi. Fruiting N N 149 RM 510495 Markow 1993 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-99130 Stuart Markow 11073 15 7 1993 U.S.A. Idaho Fremont Targhee National Forest: Island Park Plateau: west bank of Henrys Fork, ca 1.5 air mi N of the confluence with Warm River, 11 air mi NE of Ashton. Riparian shrub community, with Cornus sericea, Symphoricarpos albus, Rosa woodsii, Urtica dioica, Heracleum sphondylium, Glyceria striata, Carex lanuginosa and Carex stipata. 5350 ft. T9N R44E S6 44.1363 -111.3046 1 mi. Calc. from TRS N N 150 RM 53029 Packer 1998 RM 678785 RM0215603 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-12451 B. A. Packer 5281 T. McGowan & J. Brondum 12 8 1998 U.S.A. Wyoming Natrona Laramie Range: ca 10 air mi SE of Casper on County Road 607, along unnamed dry creek. Along dry creek beds and surrounding grasslands. 6200 6500 ft. 42.7006° N, 106.1576° W T32N R78W S35 SE1/4 42.7006 -106.1576 Fruiting N RM0215603 N 151 RM 550783 Wood 1996 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-103645 Jean Wood 7666 K. Ahlenslager, L. Swartz and J. Nisbet 13 8 1996 U.S.A. Washington Ferry Western Colville National Forest and Vicinity: Deadman Creek Road, ca 2 mi W of Boyds. Roadside. 1600 2200 ft. 48.7072° N, 118.1647° W T37N R37E S18 48.7072 -118.1647 Vegetative N N 152 RM 5688 Taylor, Amy 1998 RM 666173 RM0215602 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-449 Amy J. Roderick 4833 11 6 1998 U.S.A. Wyoming Natrona Upper North Platte and Laramie River Drainages: North Platte River S of County Road 408, ca 0.3 air mi E of Pathfinder Dam; ca 9 air mi SW of Alcova townsite. River banks and adjacent granite rocks; Rhus toxicodendron abundant. 5700 ft. 42.4675° N, 106.8457° W T29N R84W S24 SW1/4 42.4675 -106.8457 Flowering N RM0215602 N 153 RM 571107 Beartooth RM 860800 USFS0043816 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene 1. Toxicodendron rydbergii (Small ex Rydb.) Greene. RM-104556 B. E. Nelson 15227 Erik Nelson 2 6 1988 U.S.A. Wyoming Park Beartooth Mountains: near the mouth of Clarks Fork Canyon, ca 25.5 air mi NW of Cody, ca 8.5 air mi SW of Clark. Cracks in granite cliffs; with erect naked stems to 1 m long. 4480 4640 ft. 44.8481° N, 109.3306° W T56N R104W S12 44.8481 -109.3306 Flowering N USFS0043816 N 154 RM 572125 Laramie Mountains RM 599808 RM0215559 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-18510 B. E. Nelson 17115 Jan Pollet 18 7 1989 U.S.A. Wyoming Platte Laramie Mountains: Cottonwood Creek above the falls, ca 23 air mi NW of Wheatland; ca 11 air mi ENE of Laramie Peak. Stream bank and bench. 5500 ft. 42.3128° N, 105.2539° W; uncertainty 2 mi. T27N R70W S16; also S15 42.3128 -105.2539 2 mi. Vegetative N RM0215559 N 155 RM 572232 Laramie Mountains RM 599807 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-104648 B. E. Nelson 17212 Jan Pollet 19 7 1989 U.S.A. Wyoming Platte [location and coordinates withheld] Cracks and shelves on granitic outcrop. 5470 ft. Fruiting N N 156 RM 573237 Dueholm 1978 RM 322311 RM0215586 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-104752 B. E. Nelson 2033 19 9 1978 U.S.A. Wyoming Campbell Powder River Basin: ca 7.5 air mi SSE of Spotted Horse, ca 26 air mi NW of Gillette along Box Elder Draw. Occasional on slopes of draw under Prunus. 4400 ft. 44.60167° N, 105.7881° W; uncertainty 0.5 mi. T53N R74W S5 NE1/4 44.60167 -105.7881 1 mi. Fruiting N RM0215586 N 157 RM 574034 Dueholm 1978 RM 322314 RM0215585 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-104786 B. E. Nelson 2150 20 9 1978 U.S.A. Wyoming Campbell Powder River Basin: ca 44 air mi N of Gillette, ca 5.5 air mi S of Montana along North Fork Olmstead Creek. Occasional in loamy clay in bottomland with Populus and Juniperus. 3700 ft. 44.9142° N, 105.5033° W; uncertainty 1 mi. T57N R72W S22 NW1/4 44.9142 -105.5033 1 mi. Vegetative N RM0215585 N 158 RM 574271 R Jones 1991 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-104811 B. E. Nelson 21867 29 7 1991 U.S.A. Wyoming Hot Springs Owl Creek/Bridger Mountains: Owl Creek Mountains: lower Jones Creek Canyon, ca 4.5 air mi E of Wind River Canyon, ca 7.5 air mi SE of Thermopolis. Brushy canyon bottom. 4900 5100 ft. 43.565° N, 108.1258° W; uncertainty 1 mi. T42N R94W S34 43.565 -108.1258 1 mi. N N 159 RM 574279 R Jones 1991 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-104812 B. E. Nelson 21874 31 7 1991 U.S.A. Wyoming Hot Springs Owl Creek/Bridger Mountains: Bridger Mountains: Ditch Creek Canyon, S and above Buffalo Creek, ca 14 air mi ESE of Thermopolis. Sandstone cliffs and ledges on west canyon rim. 6300 ft. 43.581° N, 107.9669° W; uncertainty 2 mi. T42N R93W S25; also S36 43.581 -107.9669 2 mi. N N 160 RM 574737 SE WY 1978 RM 317782 RM0215561 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-104852 B. E. Nelson 2373 26 9 1978 U.S.A. Wyoming Goshen Southern Powder River Basin/Southeastern Plains: Southeastern Plains: Goshen Hole: ca 1-1.5 mi SW of Torrington, S of golf course along North Platte River. In river bottom with Glycyrrhiza and Populus. 4100 ft. 42.0549° N, 104.2132° W; NAD 83, uncertainty 0.25 mi., Nat. Geog. TOPO! T24N R61W S17 NE1/4 42.0549 -104.2132 NAD 83 0 mi. N N Nat. Geog. TOPO! BEN Frequent. Fruiting N RM0215561 N 161 RM 574772 SE WY 1978 RM 317781 RM0215560 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-104858 B. E. Nelson 2408 26 9 1978 U.S.A. Wyoming Goshen Southern Powder River Basin/Southeastern Plains: Southeastern Plains: Goshen Hole: ca 9 air mi SE of Torrington, ca 1 air mi SW of Henry, Nebraska on north side of North Platte River. In clay in the river bottom with Asparagus and Panicum. 4050 ft. 41.9882° N, 104.0571° W; NAD 83, uncertainty 0.25 mi., Nat. Geog. TOPO! T23N R60W S3 SE1/4 41.9882 -104.0571 NAD 83 0 mi. N N Nat. Geog. TOPO! BEN Frequent. Fruiting N RM0215560 N 162 RM 574953 SE WY 1978 RM 317780 RM0215562 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-104885 B. E. Nelson 2589 29 9 1978 U.S.A. Wyoming Platte Southern Powder River Basin/Southeastern Plains: Southeastern Plains: ca 4.5 air mi NNE of Wheatland on Wyo Hwy 320, along Laramie River. Common in sandy river bottom with Populus and Symphoricarpos. 4550 ft. 42.125° N, 104.9364° W; uncertainty 0.5 mi. T25N R67W S19 SW1/4 42.125 -104.9364 1 mi. Fruiting N RM0215562 N 163 RM 575399 Big Horn Mts RM 347365 RM0215589 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-104937 B. E. Nelson 3220 8 7 1979 U.S.A. Wyoming Sheridan Big Horn Mountains: in Wolf Creek Canyon above Wolf Post Office (Eaton Ranch), ca 8 air mi S of Dayton, ca 15.5 air mi W of Sheridan. Open Douglas fir-ponderosa pine forest in the canyon. 5000 ft. 44.77028° N, 107.26667° W; uncertainty 1 mi. T55N R86W S6 SE1/4 44.77028 -107.26667 1 mi. Vegetative N RM0215589 N 164 RM 575410 Big Horn Mts RM 346804 RM0215590 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-104937 B. E. Nelson 3231 8 7 1979 U.S.A. Wyoming Sheridan Big Horn Mountains: in Wolf Creek Canyon above Wolf Post Office (Eaton Ranch), ca 8 air mi S of Dayton, ca 15.5 air mi W of Sheridan. Stony slopes. 5000 ft. 44.77028° N, 107.26667° W; uncertainty 1 mi. T55N R86W S6 SE1/4 44.77028 -107.26667 1 mi. Fruiting N RM0215590 N 165 RM 576039 Dueholm 1979 RM 331329 RM0215584 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-104961 B. E. Nelson 3858 16 7 1979 U.S.A. Wyoming Sheridan Powder River Basin: ca 6.5 air mi WNW of Parkman, ca 12 air mi NW of Dayton. Brushy slope. 5000 ft. 44.9758° N, 107.47056° W; uncertainty 1 mi. T58N R88W S27 NE1/4 44.9758 -107.47056 1 mi. Vegetative N RM0215584 N 166 RM 577304 Big Horn Mts RM 346806 RM0215554 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-105095 B. E. Nelson 5183 6 6 1980 U.S.A. Wyoming Washakie Big Horn Mountains: near the mouth of Tensleep Canyon, ca 5 air mi NE of Ten Sleep. Brushy bottom of canyon and along the creek. 4900 ft. 44.07028° N, 107.35861° W; uncertainty 1 mi. T47N R87W S6 SW1/4 44.07028 -107.35861 1 mi. Flowering N RM0215554 N 167 RM 577918 Big Horn Mts RM 347366 RM0215588 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-105154 B. E. Nelson 5746 7 7 1980 U.S.A. Wyoming Fremont Big Horn Mountains: along Cottonwood Creek on the Lost Cabin-Nowood Road, ca 10.5 air mi N of Lost Cabin, ca 49.5 air mi NE of Riverton. Sandstone outcrops. 6200 ft. 43.4364° N, 107.5819° W; uncertainty 1 mi. T40N R90W S13 43.4364 -107.5819 1 mi. Vegetative N RM0215588 N 168 RM 579147 Big Horn Mts RM 347367 RM0215591 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-105241 B. E. Nelson 6856 6 8 1980 U.S.A. Wyoming Johnson Big Horn Mountains: in the canyon along the North Fork Crazy Woman Creek, ca 13.5 air mi SW of Buffalo. Along the creek. 7000 ft. 44.1864° N, 106.8717° W; uncertainty 1 mi. T49N R83W S29 44.1864 -106.8717 1 mi. Fruiting N RM0215591 N 169 RM 580618 Big Horn Mts RM 347368 RM0215587 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-104139 B. E. Nelson 8269 17 7 1981 U.S.A. Wyoming Washakie Big Horn Mountains: along Nowood River at the foot of Mahogany Butte, ca 27 air mi S of Ten Sleep, ca 9.5 air mi SSW of Big Trails. River bank. 5000 ft. 43.6506° N, 107.3811° W; uncertainty 1 mi. T43N R88W S35 43.6506 -107.3811 1 mi. N N Vegetative N RM0215587 N 170 RM 593109 Powder River Basin RM 523710 RM0215597 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-106345 Keith H. Dueholm 11968 Brian Naze 15 6 1985 U.S.A. Wyoming Natrona Powder River Basin: ca 12 air mi WSW of Midwest. In sandstone crevices on lower slope of southeast-facing ridge. 5400 ft. 43.39° N, 106.4933° W; uncertainty 1 mi. T40N R80W S31 SE1/4 43.39 -106.4933 1 mi. Fruiting N RM0215597 N 171 RM 608276 Big Horn Mts RM 331328 RM0215598 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-106943 Ronald L. Hartman 10617 3 8 1979 U.S.A. Wyoming Sheridan Big Horn Mountains: ca 3 air mi SSW of Dayton. Ridge with sandy lower slopes and stream bottom, Gypsum springs and Chugwater formations. 4400 ft. 44.8289° N, 107.2928° W; uncertainty 1 mi. T56N R87W S13 44.8289 -107.2928 1 mi. Fruiting N RM0215598 N 172 RM 623224 Dueholm 1978 RM 322312 RM0215600 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-107604 Ronald L. Hartman 6038 Keith Dueholm 5 6 1978 U.S.A. Wyoming Campbell Powder River Basin: Chicken Creek Divide, 2.5 mi N of Spotted Horse. Ridge, slopes, badly eroded valleys, and plains; moist rocky ravine. 4200 ft. 44.7458° N, 105.8275° W; uncertainty 1 mi. T55N R75W S13 44.7458 -105.8275 1 mi. Buds N RM0215600 N 173 RM 624075 Dueholm 1978 RM 322313 RM0215599 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-107655 Ronald L. Hartman 6961 Keith Dueholm and Mary Alice Sanguinetti 22 6 1978 U.S.A. Wyoming Campbell Powder River Basin: ca 11.5 air mi NNE of Weston. Open slopes. 3800 ft. 44.77917° N, 105.2383° W; uncertainty 1 mi. T55N R70W S2 44.77917 -105.2383 1 mi. Flowering and Fruiting N RM0215599 N 174 RM 625985 Big Horn Mts RM 347364 RM0215595 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-107784 Ronald L. Hartman 9531 Ann Odasz 26 6 1979 U.S.A. Wyoming Sheridan Big Horn Mountains: Bighorn National Forest: Little Bighorn River Canyon, ca 16 air mi W of Parkman. Shaded limestone area along river. 5000 5400 ft. 44.9758° N, 107.6533° W; uncertainty 1 mi. T58N R89W S30 44.9758 -107.6533 1 mi. Flowering N RM0215595 N 175 RM 637309 SE WY 1993 RM 599806 RM0215544 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-108266 B. E. Nelson 24832 19 5 1993 U.S.A. Wyoming Platte [location and coordinates withheld] Thickets along overflow channel. 4320 4400 ft. Vegetative N RM0215544 N 176 RM 637487 SE WY 1993 RM 599805 RM0215548 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-108274 B. E. Nelson 25009 20 5 1993 U.S.A. Wyoming Niobrara Southern Powder River Basin/Southeastern Plains: Southern Powder River Basin: along Wyo Hwy 270 just W of intersection with Wyo Hwy 272, ca 2 air mi NE of Lance Creek; ca 22.5 air mi NNW of Lusk. At base of ledge and in cracks of conglomerate. 4500 4640 ft. 43.0524° N, 104.6152° W; NAD 83, uncertainty 0.25 mi., Nat. Geog. TOPO! T36N R65W S36 43.0524 -104.6152 NAD 83 0 mi. N N Nat. Geog. TOPO! BEN Vegetative N RM0215548 N 177 RM 637722 SE WY 1993 RM 599804 RM0215552 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-108287 B. E. Nelson 25278 26 5 1993 U.S.A. Wyoming Goshen Southern Powder River Basin/Southeastern Plains: Hartville Uplift: Wildcat Hills: between the heads of Willow and Muskrat creeks, ca 43 air mi NNW of Torrington. On sandstone ledges, low cliffs, and adjacent slope. 5680 5860 ft. 42.59° N, 104.6065° W; NAD 83, uncertainty 0.5 mi., Nat. Geog. TOPO! T30N R65W S12 42.59 -104.6065 NAD 83 1 mi. N N Nat. Geog. TOPO! BEN Buds N RM0215552 N 178 RM 637792 SE WY 1993 RM 599803 RM0215543 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-108289 B. E. Nelson 25348 27 5 1993 U.S.A. Wyoming Platte Southern Powder River Basin/Southeastern Plains: Hartville Uplift: at the head of Webb Canyon on Wyo Hwy 270, ca 4.5 air mi N of Hartville; ca 8.5 air mi N of Guernsey. In cracks of rocks in drainage channel. 5200 5460 ft. 42.3847° N, 104.7047° W T28N R65W S19 42.3847 -104.7047 Vegetative N RM0215543 N 179 RM 637978 SE WY 1993 RM 599802 RM0215545 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-108293 B. E. Nelson 25533 30 5 1993 U.S.A. Wyoming Platte Southern Powder River Basin/Southeastern Plains: Goshen Hole Rim: ca 13.5 air mi N of Chugwater; ca 12 air mi SE of Wheatland. Rough breaks with conglomerates and cobblestones at upper levels and mudstones and soft sandstones below. 5000 5160 ft. 41.9517° N, 104.7789° W T23N R66W S21 41.9517 -104.7789 1 mi. Buds N RM0215545 N 180 RM 638018 SE WY 1993 RM 599801 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-108294 B. E. Nelson 25573 13 6 1993 U.S.A. Wyoming Goshen Southern Powder River Basin/Southeastern Plains: Southeastern Plains: above Horse Creek just N of Laramie County, ca 12 air mi SW of La Grange; ca 36 air mi SSW of Torrington. Brushy and wooded bottom and lower slopes of drainage in rough breaks. 5100 5200 ft. 41.5664° N, 104.3731° W; NAD 83, uncertainty 0.25 mi., Nat. Geog. TOPO! T19N R63W S36 41.5664 -104.3731 NAD 83 0 mi. N N Nat. Geog. TOPO! BEN Flowering N N 181 RM 638162 SE WY 1993 RM 599800 RM0215555 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-108297 B. E. Nelson 25717 14 6 1993 U.S.A. Wyoming Goshen Southern Powder River Basin/Southeastern Plains: Goshen Hole Rim: northwest end of Bear Mountain, ca 7 air mi SSW of Hawk Springs; ca 27 air mi SSW of Torrington. Thickets and in draw on steep north slope. 5000 5240 ft. 41.692° N, 104.3139° W; NAD 83, uncertainty 0.25 mi., Nat. Geog. TOPO! T20N R62W S21 41.692 -104.3139 NAD 83 0 mi. N N Nat. Geog. TOPO! BEN Flowering N RM0215555 N 182 RM 639032 SE WY 1993 RM 599799 RM0215541 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-108327 B. E. Nelson 27612 26 7 1993 U.S.A. Wyoming Platte Southern Powder River Basin/Southeastern Plains: Hartville Uplift: along North Platte River ca 0.6-0.8 air mi SE of Guernsey Dam, ca 1 air mi NW of Guernsey. Thickets on steep rocky slopes on the river bank. 4340 4400 ft. 42.285° N, 104.7633° W T27N R66W S27 SE1/4 42.285 -104.7633 1 mi. Flowering N RM0215541 N 183 RM 639502 SE WY 1993 RM 599798 RM0215540 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-108343 B. E. Nelson 28077 2 8 1993 U.S.A. Wyoming Platte Southern Powder River Basin/Southeastern Plains: Hartville Uplift: between Whalen Canyon or County Road 202 and the head of Sparks Canyon, ca 1.5-2.2 air mi ESE of Hartville; ca 4.5 air mi NE of Guernsey. Banks and bottom of gully with scattered junipers. 4700 4950 ft. 42.3281° N, 104.6844° W T27N R65W S8 SW1/4; also SE1/4 S7 42.3281 -104.6844 1 mi. Vegetative N RM0215540 N 184 RM 639523 SE WY 1993 RM 599797 RM0215551 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-108345 B. E. Nelson 28098 2 8 1993 U.S.A. Wyoming Goshen Southern Powder River Basin/Southeastern Plains: Hartville Uplift: Haystack Range: Hell Gap and vicinity on Whalen Canyon or County Road 202, ca 10 air mi NE of Guernsey; ca 14.5 air mi NW of Fort Laramie. On and at the base of rust-colored cliffs. 5060 5240 ft. 42.3982° N, 104.6416° W; NAD 83, uncertainty 0.25 mi., Nat. Geog. TOPO! T28N R65W S15 S1/2 42.3982 -104.6416 NAD 83 0 mi. N N Nat. Geog. TOPO! BEN Vegetative N RM0215551 N 185 RM 639839 SE WY 1993 RM 599796 RM0215546 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-108355 B. E. Nelson 28409 17 8 1993 U.S.A. Wyoming Laramie [location and coordinates withheld] Dry flats and benches along the creek. 5850 6000 ft. Vegetative N RM0215546 N 186 RM 640096 SE WY 1993 RM 599795 RM0215553 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-18512 B. E. Nelson 28662 17 8 1993 U.S.A. Wyoming Goshen [location and coordinates withheld] At the base of north-facing bluffs. 4940 4960 ft. Vegetative N RM0215553 N 187 RM 640610 SE WY 1993 RM 599794 RM0215558 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-108386 B. E. Nelson 29172 25 8 1993 U.S.A. Wyoming Natrona [location and coordinates withheld] Thickets and dense stands of Russian olive, boxelder, cottonwood, and willow. 5120 ft. Fruiting N RM0215558 N 188 RM 640846 SE WY 1993 RM 599793 RM0215549 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-108400 B. E. Nelson 29403 29 8 1993 U.S.A. Wyoming Niobrara Southern Powder River Basin/Southeastern Plains: Hat Creek Breaks: between S Bar or County Road 62 and S Bar Creek, ca 18 air mi NE of Lusk; ca 15 air mi N of Van Tassell. Marshy creek bottom with flowing water. 4540 4720 ft. 42.877° N, 104.1291° W; NAD 83, uncertainty 0.25 mi., Nat. Geog. TOPO! T34N R61W S36 SE1/4 42.877 -104.1291 NAD 83 0 mi. N N Nat. Geog. TOPO! BEN Vegetative N RM0215549 N 189 RM 641024 SE WY 1993 RM 599792 RM0215550 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-108406 B. E. Nelson 29576 31 8 1993 U.S.A. Wyoming Goshen Southern Powder River Basin/Southeastern Plains: Goshen Hole: along North Platte River just below mouth of Laramie River, at east edge of Fort Laramie National Historic Site, ca 1.3 air mi SSW of Fort Laramie; ca 20 air mi WNW of Torrington. Cottonwood woodland in the river bottom. 4220 4240 ft. 42.1965° N, 104.5296° W; NAD 83, uncertainty 0.25 mi., Nat. Geog. TOPO! T26N R64W S27 South1/2 42.1965 -104.5296 NAD 83 0 mi. N N Nat. Geog. TOPO! BEN Fruiting N RM0215550 N 190 RM 641108 SE WY 1993 RM 599791 RM0215556 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-108408 B. E. Nelson 29659 31 8 1993 U.S.A. Wyoming Goshen Southern Powder River Basin/Southeastern Plains: Goshen Hole: along the North Platte River on London Flats, ca 2.2 air mi S of Lingle, ca 9.5 air mi WNW of Torrington. Drier flats in the river bottom. 4140 ft. 42.1072° N, 104.3566° W; NAD 83, uncertainty 0.25 mi., Nat. Geog. TOPO! T25N R62W S30 SW1/4 42.1072 -104.3566 NAD 83 0 mi. N N Nat. Geog. TOPO! BEN Vegetative N RM0215556 N 191 RM 641275 SE WY 1993 RM 599790 RM0215557 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-18513 B. E. Nelson 29821 27 9 1993 U.S.A. Wyoming Goshen [location and coordinates withheld] Sand bars, mud flats, and river bank. 4130 ft. Vegetative N RM0215557 N 192 RM 641394 SE WY 1993 RM 599789 RM0215547 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-108430 B. E. Nelson 29940 29 9 1993 U.S.A. Wyoming Niobrara [location and coordinates withheld] Steep slopes and ledges of small canyon. 4800 5000 ft. Vegetative N RM0215547 N 193 RM 641508 SE WY 1993 RM 599788 RM0215542 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-108440 B. E. Nelson 30054 1 10 1993 U.S.A. Wyoming Platte Southern Powder River Basin/Southeastern Plains: Hartville Uplift: just N of Wendover in Wendover Canyon along the North Platte River, ca 8 air mi NW of Guernsey. Steep, rocky banks with thickets between the river and the railroad tracks. 4440 4500 ft. 42.3289° N, 104.8813° W T27N R67W S10 NE1/4 42.3289 -104.8813 1 mi. Fruiting N RM0215542 N 194 RM 642676 SE WY 1994 RM 663718 RM0215615 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-108486 B. E. Nelson 31727 19 6 1994 U.S.A. Wyoming Natrona Southern Powder River Basin/Southeastern Plains: Southern Powder River Basin: along Three Buttes Creek ca 1.5 air mi N of Cottonwood River, ca 18 air mi N of Poder River, ca 46 air mi NW of Casper. On ledges of sandstone cliffs. 5900 5960 ft. 43.2932° N, 107.0154° W T38N R85W S2 SE1/4 43.2932 -107.0154 Vegetative N RM0215615 N 195 RM 642985 SE WY 1994 RM 663717 RM0215614 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-108502 B. E. Nelson 32036 David Reilly 23 6 1994 U.S.A. Wyoming Goshen Southern Powder River Basin/Southeastern Plains: Southeastern Plains: Fort Laramie National Historic Site: along the Laramie River ca 0.5 mi E of the old fort, ca 1.7 air mi SW of Fort Laramie (town); ca 21 air mi NW of Torrington. Cottonwood woodland in the river bottom. 4230 ft. 42.2025° N, 104.5473° W; NAD 83, uncertainty 0.5 mi., Nat. Geog. TOPO! T26N R64W S28 N1/2 42.2025 -104.5473 NAD 83 1 mi. N N Nat. Geog. TOPO! BEN Vegetative N RM0215614 N 196 RM 644498 SE WY 1994 RM 663716 RM0215613 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-108550 B. E. Nelson 33543 Tim Chumley and Robbin Romberg 4 8 1994 U.S.A. Wyoming Goshen Southern Powder River Basin/Southeastern Plains: Southeastern Plains: along Bear Creek just W of the mouth of Dater Creek and ca 4 air mi S of Castle Rocks, ca 11 air mi W of La Grange; ca 30 air mi SSW of Torrington. Brushy, with scattered trees in stream bottom adjacent to natural hay fields. 4780 ft. 41.6519° N, 104.3686° W; NAD 83, uncertainty 0.25 mi., Nat. Geog. TOPO! T20N R63W S36 SE1/4; also T19N R63W S1 NE1/4 41.6519 -104.3686 NAD 83 0 mi. N N Nat. Geog. TOPO! BEN Vegetative N RM0215613 N 197 RM 644550 SE WY 1994 RM 663715 RM0215612 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-108552 B. E. Nelson 33595 David Reilly 8 8 1994 U.S.A. Wyoming Goshen Southern Powder River Basin/Southeastern Plains: Southeastern Plains: Fort Laramie National Historic Site: along the Laramie River W of the fort ca 2.5 air mi WSW of Fort Laramie (town); ca 21.5 air mi WNW of Torrington. Woodland on the old flood plain. 4230 ft. 42.2025° N, 104.5608° W; NAD 83, uncertainty 0.25 mi., Nat. Geog. TOPO! T26N R64W S29 NE1/4 42.2025 -104.5608 NAD 83 0 mi. N N Nat. Geog. TOPO! BEN Vegetative N RM0215612 N 198 RM 644588 SE WY 1994 RM 663714 RM0215611 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-108554 B. E. Nelson 33632 8 8 1994 U.S.A. Wyoming Goshen Southern Powder River Basin/Southeastern Plains: Southeastern Plains: Fort Laramie National Historic Site: below the Fort Laramie Canal ca 2.5 air mi WSW of Fort Laramie (town), ca 20.5 air mi WNW of Torrington. Meadows and banks adjacent to a slough. 4240 4260 ft. 42.1988° N, 104.5472° W; NAD 83, uncertainty 0.5 mi., Nat. Geog. TOPO! T26N R64W S28 42.1988 -104.5472 NAD 83 1 mi. N N Nat. Geog. TOPO! BEN Vegetative N RM0215611 N 199 RM 649141 SE WY 1993 RM 599787 RM0215596 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-109359 Ronald L. Hartman 40789 11 7 1993 U.S.A. Wyoming Goshen Southern Powder River Basin/Southeastern Plains: Southeastern Plains: Goshen Hole Rim: Mers Hill, ca 10 air mi E of Slater. Sandstone outcrops and sandy slopes. 4700 4950 ft. 41.8789° N, 104.615° W; NAD 83, uncertainty 0.5 mi., Nat. Geog. TOPO! T22N R65W S13 W1/2; and also E1/2 S14 41.8789 -104.615 NAD 83 1 mi. N N Nat. Geog. TOPO! BEN Fruiting N RM0215596 N 200 RM 661062 Marriott 1984 RM 371089 RM0215580 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-104296 B. E. Nelson 11731 12 9 1984 U.S.A. Wyoming Crook Black Hills: Bear Lodge Mountains: east side of Norgrain Hill, ca 6 air mi NE of Aladdin, ca 24.5 air mi NE of Sundance. Bottom of canyon with oak-ash and north-facing slopes with oak-ponderosa pine. 3500 ft. 44.70111° N, 104.0778° W; uncertainty 1 mi. T54N R60W S5 44.70111 -104.0778 1 mi. Vegetative N RM0215580 N 201 RM 661219 Marriott 1984 RM 371090 RM0215579 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-104308 B. E. Nelson 11887 13 9 1984 U.S.A. Wyoming Crook Black Hills: Bear Lodge Mountains: along a canyon leading into Beaver Creek, ca 0.8 air mi NW of Alva, ca 7.5 air mi ENE of Hulett. Canyon bottom with oak, elm, hawthorn. 4100 ft. 44.6975° N, 104.4475° W; uncertainty 1 mi. T54N R63W S5 44.6975 -104.4475 1 mi. N N Fruiting N RM0215579 N 202 RM 661278 Marriott 1984 RM 371091 RM0215578 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-110002 B. E. Nelson 11946 16 9 1984 U.S.A. Wyoming Crook Black Hills: along Boundary Gulch, ca 5 air mi SSE of Beulah, ca 16 air mi ENE of Sundance. Slopes in oak forest. 4400 ft. 44.4661° N, 104.0622° W; uncertainty 1 mi. T52N R60W S28 44.4661 -104.0622 1 mi. Fruiting N RM0215578 N 203 RM 661510 Marriott 1984 RM 371092 RM0215583 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-110013 B. E. Nelson 12177 20 9 1984 U.S.A. Wyoming Crook Black Hills: Bear Lodge Mountains: Harding Gulch, ca 6.5 air mi NE of Alva, ca 12.8 air mi NE of Hulett. North-facing slope with paper birch. 4700 ft. 44.7847° N, 104.3886° W; uncertainty 1 mi. T55N R63W S2 44.7847 -104.3886 1 mi. Vegetative N RM0215583 N 204 RM 661792 Marriott 1982 RM 371087 RM0215582 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-105390 B. E. Nelson 8784 7 7 1982 U.S.A. Wyoming Weston Black Hills: Elk Mountains: at the South Dakota state line, ca 14 air mi SE of Newcastle. Ponderosa pine slopes and small grassy openings. 4900 ft. 43.6911° N, 104.0503° W; uncertainty 1 mi. T43N R60W S22 43.6911 -104.0503 1 mi. Vegetative N RM0215582 N 205 RM 661793 Marriott 1982 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-105390 B. E. Nelson 8785 7 7 1982 U.S.A. Wyoming Weston Black Hills: Elk Mountains: at the South Dakota state line, ca 14 air mi SE of Newcastle. Ponderosa pine slopes and small grassy openings. 4900 ft. 43.6911° N, 104.0503° W; uncertainty 1 mi. T43N R60W S22 43.6911 -104.0503 1 mi. N N 206 RM 661897 Marriott 1982 RM 371088 RM0215581 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-105393 B. E. Nelson 8889 9 7 1982 U.S.A. Wyoming Crook Black Hills: Bear Lodge Mountains: Oak Creek drainage and ridge between Oak and Alum creeks, ca 6.5 air mi NNW of Aladdin; ca 23 air mi NNE of Sundance. Lower shaded slopes of draw. 3800 ft. 44.7158° N, 104.245° W; uncertainty 1 mi. T55N R62W S36 44.7158 -104.245 1 mi. Vegetative N RM0215581 N 207 RM 662540 WY Black Hills RM 183886 RM0215616 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-110140 Gerald B. Ownbey 556 14 6 1940 U.S.A. Wyoming Crook 8 mi NW of Hulett. Canyons. 5100 ft. 44.7486° N, 104.6946° W; uncertainty 1 mi. T55N R65W S17 44.7486 -104.6946 1 mi. Flowering N RM0215616 N 208 RM 664584 Marriott 1983 RM 371074 RM0215574 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-105545 Hollis Marriott 3019 14 6 1983 U.S.A. Wyoming Crook Black Hills: Bear Lodge Mountain, upper Beaverdam Creek drainage; ca 4 air mi NE of Alva. Pine-oak forest. 4500 ft. 44.7272° N, 104.3886° W; uncertainty 1 mi. T55N R63W S26 W1/2 44.7272 -104.3886 1 mi. Buds N RM0215574 N 209 RM 664616 Marriott 1983 RM 371075 RM0215573 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-105548 Hollis Marriott 3051 15 6 1983 U.S.A. Wyoming Crook [location and coordinates withheld] Deciduous thicket in draw. 4300 ft. Buds N RM0215573 N 210 RM 664985 Marriott 1983 RM 371076 RM0215572 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-105558 Hollis Marriott 3420 23 6 1983 U.S.A. Wyoming Crook Black Hills: tributary to Road Creek off The Bank Land, (Graham Ranch), ca 13 air mi W of Sundance. Pine-juniper woodland; southwest-facing slopes and ridge with sandstone rimrock and boulders. 4500 4600 ft. 44.42° N, 104.6689° W; uncertainty 1 mi. T51N R65W S9 44.42 -104.6689 1 mi. Vegetative N RM0215572 N 211 RM 665119 Marriott 1983 RM 371077 RM0215571 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-105561 Hollis Marriott 3552 24 6 1983 U.S.A. Wyoming Crook [location and coordinates withheld] Grassland; south, east, and northeast-facing slopes. 5000 ft. Vegetative N RM0215571 N 212 RM 665176 Marriott 1983 RM 371078 RM0215570 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-105562 Hollis Marriott 3609 Bertha Gillam and Sherry Bashor 27 6 1983 U.S.A. Wyoming Crook Black Hills: Dugout Gulch near confluence with Sand Creek, ca 4.7 air mi SSW of Beulah. Deciduous woods along creek. 3800 ft. 44.4803° N, 104.12306° W; uncertainty 1 mi. T52N R61W S24 SE1/4 44.4803 -104.12306 1 mi. Vegetative N RM0215570 N 213 RM 66605 Elliott, Brian 1998 RM 829411 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-12932 Brian Elliott 1886 16 6 1998 U.S.A. Colorado Las Animas Wet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: Park Plateau: Spanish Peaks Wildlife Area: County Road 41.7 SW of Aguila. Ponderosa pine and Quercus gambellii. 7600 ft. 37.2728° N, 104.8564° W T32S R67W S11 South1/4; also N1/2 S14 37.2728 -104.8564 N N 214 RM 666173 Marriott 1983 RM 371079 RM0215569 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-105587 Hollis Marriott 4602 14 7 1983 U.S.A. Wyoming Crook Black Hills: Miller Creek, Garman Ranch; ca 9.3 air mi SSE of Devils Tower. Pine ridge with grassland understory. 4400 4600 ft. 44.47639° N, 104.6328° W; uncertainty 1 mi. T52N R65W S23 SE1/4; and SW1/4 S24 44.47639 -104.6328 1 mi. Vegetative N RM0215569 N 215 RM 666379 Marriott 1983 RM 371080 RM0215568 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-105592 Hollis Marriott 4809 21 7 1983 U.S.A. Wyoming Crook [location and coordinates withheld] Roadside. 4300 ft. Fruiting N RM0215568 N 216 RM 666448 Marriott 1983 RM 371096 RM0215575 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-105594 Hollis Marriott 4879 21 7 1983 U.S.A. Wyoming Crook Black Hills: Keyhole Reservoir, south side W of Coulter Bay, ca 10 air mi NE of Moorcroft. Pine forest above sandstone cliffs. 4100 ft. 44.3622° N, 104.81° W; uncertainty 1 mi. T51N R66W S32 NE1/4 44.3622 -104.81 1 mi. Fruiting N RM0215575 N 217 RM 666931 Marriott 1983 RM 371081 RM0215567 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-24940 Hollis Marriott 5373 2 8 1983 U.S.A. Wyoming Crook Black Hills: Goldie Divide near junction of Goldie and New Haven roads, ca 5 air mi NW of Hulett. Grassland. 4500 ft. 44.7253° N, 104.7057° W T55N R65W S30 N1/2 44.7253 -104.7057 Fruiting N RM0215567 N 218 RM 668777 Marriott 1984 RM 371082 RM0215566 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-105631 Hollis Marriott 7171 26 6 1984 U.S.A. Wyoming Weston Black Hills: west side of ridge S of Elk Mountain (USFS Road 818) near Mix Spring, ca 13.5 air mi SE of Newcastle. Pine forest on rocky soil. 4800 ft. 43.6911° N, 104.0705° W; uncertainty 2 mi. T43N R60W S21; also S27, 28 43.6911 -104.0705 2 mi. Flowering and Fruiting N RM0215566 N 219 RM 669461 Marriott 1984 RM 371083 RM0215565 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-110805 Hollis Marriott 7828 9 7 1984 U.S.A. Wyoming Crook [location and coordinates withheld] Lower north slope, among talus. 5100 ft. Vegetative N RM0215565 N 220 RM 669520 Marriott 1984 RM 371084 RM0215564 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-105647 Hollis Marriott 7885 11 7 1984 U.S.A. Wyoming Crook [location and coordinates withheld] Pine forest with many openings. 5200 ft. Vegetative N RM0215564 N 221 RM 670035 Marriott 1984 RM 371085 RM0215563 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-105652 Hollis Marriott 8381 2 8 1984 U.S.A. Wyoming Weston [location and coordinates withheld] Draw with pines and junipers, on sandy-rocky soil. 4700 ft. Fruiting N RM0215563 N 222 RM 670464 Marriott 1984 RM 371086 RM0215576 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-110850 Hollis Marriott 8790 Dennis Horning 8 8 1984 U.S.A. Wyoming Weston Black Hills: Elk Mountain area, Clifton Canyon above confluence with Lost Canyon, ca 13.5 air mi SSE of Newcastle. Aspen woods in canyon bottom with sandstone boulders and outcrops. 4500 ft. 43.6622° N, 104.0705° W; uncertainty 1 mi. T43N R60W S33 NW1/4 of 43.6622 -104.0705 1 mi. Fruiting N RM0215576 N 223 RM 67222 Elliott, Brian 1998 RM 829410 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-12948 Brian Elliott 2439 22 6 1998 U.S.A. Colorado Fremont Wet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: over BLM boundary on U.S. Hwy 50, W of Parkdale. Riparian and pinyon-juniper. 6000 ft. 38.4832° N, 105.4117° W T18S R72W S14 SW1/4 38.4832 -105.4117 N N 224 RM 672542 Marriott 1981 RM 371093 RM0215592 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-111436 Ronald L. Hartman 13732 Hollis Marriot 19 7 1981 U.S.A. Wyoming Crook Black Hills: Devils Tower National Monument: boulder field along west base of tower. Boulder field with scattered ponderosa pine. 4300 4500 ft. 44.59306° N, 104.71° W; uncertainty 1 mi. T53N R65W S7 SW1/2 44.5902 -104.7168 NAD 83 0 mi. N N Nat. Geog. TOPO! Fruiting N RM0215592 N 225 RM 673052 Marriott 1983 RM 371094 RM0215594 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-111448 Ronald L. Hartman 16275 15 7 1983 U.S.A. Wyoming Crook Black Hills: ca 3 air mi NNE of Aladdin. Prairie, wooded stream bottom, and sandstone outcrops; wooded slope. 3600 ft. 44.6864° N, 104.1794° W; uncertainty 3 mi. T54N R61W S9; also S10 and S15 44.6864 -104.1794 3 mi. Vegetative N RM0215594 N 226 RM 673693 Marriott 1984 RM 371095 RM0215593 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-107175 Ronald L. Hartman 17773 11 7 1984 U.S.A. Wyoming Crook Black Hills: Boundary Gulch, ca 6 air mi S of Beulah. Moist stream bottom with Pinus ponderosa dominated sandy slopes; partly open snady slope. 4300 ft. 44.4661° N, 104.0622° W; uncertainty 1 mi. T52N R60W S28 44.4661 -104.0622 1 mi. Flowering N RM0215593 N 227 RM 683860 Pryors 2008 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene 1. Toxicodendron rydbergii (Small ex Rydb.) Greene
Annotated by B. E. Nelson. RM-115475 B. E. Nelson 76400 15 8 2008 U.S.A. Montana Carbon Bighorn Basin: along a tributary of South Fork Bridger Creek just W of Pryor Mountain Road, ca 8 air mi SE of Bridger. Along stream through redbeds and adjacent wet to dry meadows dominated by Glycyrrhiza. 4140 4340 ft. 45.207° N, 108.8155° W; uncertainty 0.5 mi., GPS reading T7S R24E S20 SW1/4 45.207 -108.8155 1 mi. GPS reading Fruiting N 228 RM 694040 Kuhn 2007 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene 1. Toxicodendron rydbergii (Small ex Rydb.) Greene
Annotated by B. E. Nelson. RM-114323 B. E. Nelson 72417 Bernadette Kuhn 21 6 2007 U.S.A. Colorado Baca Comanche National Grassland: Ute Canyon, ca 0.5 mi W of County Road 28, ca 5.5-6 air mi S of Campo. Shallow valley with scattered sandstone cliffs. 4150 4180 ft. 37.0182° N, 102.5902° W; GPS Reading T35S R46W S3 W1/2 37.0182 -102.5902 NAD 83 GPS Reading Vegetative N 229 RM 694208 Kuhn 2007 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene 1. Toxicodendron rydbergii (Small ex Rydb.) Greene
Annotated by B. E. Nelson. RM-114338 B. E. Nelson 72585 Bernadette Kuhn 24 6 2007 U.S.A. Colorado Baca Comanche National Grassland: Cave Spring and below just off Holt Canyon, just N of Oklahoma, ca 13 air mi SW of Campo. Riparian area in canyon bottom. 4250 ft. 37.0005° N, 102.7748° W; GPS Reading T35S R48W S13 NW1/4 37.0005 -102.7748 NAD 83 GPS Reading Vegetative N 230 RM 695132 Kuhn 2007 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene 1. Toxicodendron rydbergii (Small ex Rydb.) Greene
Annotated by Bernadette Kuhn. RM-114376 Bernadette Kuhn 1507 B. E. Nelson 21 6 2007 U.S.A. Colorado Baca Comanche National Grassland: Holt Canyon, ca 28.5 air mi SW of Springfield. With scattered Juniperus monosperma; canyon walls with Selaginella and Cheilanthes. 4253 4440 ft. 37.0141° N, 102.7736° W to 37.0114° N, 102.776° W to 37.0149° N, 102.7721° W; GPS Reading T35S R48W S12 NW1/4 37.0134 -102.776 NAD 83 GPS Reading Vegetative N 231 RM 700496 Kuhn 2008 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene 1. Toxicodendron rydbergii (Small ex Rydb.) Greene
Annotated by Bernadette Kuhn. RM-114611 Bernadette Kuhn 5788 Cali Hemenway 25 6 2008 U.S.A. Colorado Baca Comanche National Grassland: Picture Canyon, ca 28.5 air mi SSW of Springfield. Along creek and sandstone canyon walls. 4257 ft. 37.0084° N, 102.7465° W; NAD 83, , GPS Reading T35S R47W S7 37.0084 -102.7465 NAD 83 GPS Reading Vegetative N 232 RM 705301 Legler 2007 RM 840962 RM0025918 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene 1. Toxicodendron rydbergii (Small ex Rydb.) Greene
Annotated by Ben Legler on 12/29/2007. RM-119837 Ben Legler 6090 16 7 2007 U.S.A. New Mexico Colfax Vermejo Park Ranch: small rise on north side of Van Bremmer Creek 0.3 air mi SW of junction with Vermejo River; 3.7 air mi SE of Colfax. Small, rounded, eroding shale slope in short-grass prairie with sparse herbaceous cover. 6074 ft. 36° 33' 12.9" N, 104° 41' 49.2" W; WGS 84, uncertainty 3 m., GPS reading 36.55358333 -104.697 WGS 84 3 m. GPS reading Low shrub-like plants forming loose patch on shale slope. Vegetative N RM0025918 N 233 RM 705668 Legler 2007 RM 840961 RM0025917 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene 1. Toxicodendron rydbergii (Small ex Rydb.) Greene
Annotated by Ben Legler on 12/29/2007. RM-119862 Ben Legler 6455 23 7 2007 U.S.A. New Mexico Colfax Vermejo Park Ranch: 0.4 air mi SE of junction of Lookout Canyon and Cerrososo Canyon; 18 air mi NNW of Cimarron. Recently burned Pinus ponderosa forest, with numerous standing dead trees and widely scattered live trees; understory of scattered sandstone rock outcrops and sandy soil, with grasses, Heterotheca villosa, Erigeron. 8052 ft. 36° 45' 53.5" N, 105° 0' 36.8" W; WGS 84, uncertainty 3 m., GPS reading 36.76486111 -105.0102222 WGS 84 3 m. GPS reading Single patch in crevice of rock outcrop. Vegetative N RM0025917 N 234 RM 706064 Legler 2007 RM 840960 RM0025916 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene 1. Toxicodendron rydbergii (Small ex Rydb.) Greene
Annotated by Ben Legler on 12/29/2007. RM-119885 Ben Legler 6849 31 7 2007 U.S.A. New Mexico Colfax Vermejo Park Ranch: slope on north side of a cattle watering pond in headwaters of Caliente Canyon, 7.2 air mi ENE of Casa Grande. Steep rocky south facing slope with shrubby Quercus ×undulata, scattered Pinus ponderosa, sparse herbaceous cover. 8091 ft. 36° 55' 30" N, 104° 51' 22.6" W; WGS 84, uncertainty 5 m., GPS reading 36.925 -104.8562778 WGS 84 5 m. GPS reading Uncommon around rocky areas. Vegetative N RM0025916 N 235 RM 707325 Legler 2008 RM 840959 RM0025915 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene 1. Toxicodendron rydbergii (Small ex Rydb.) Greene
Annotated by Ben Legler on 1/30/2009. RM-119992 Ben Legler 8124 26 5 2008 U.S.A. Colorado Las Animas Vermejo Park Ranch: small side canyon off south side of Joe Baker Canyon 1/2 air mi upstream from (southeast of) junction with Long Canyon; 14.9 air mi SW of Trinidad; on south side of stream channel. Narrow rocky canyon, dry streambed; with Quercus gambelii, Prunus virginiana, Roninia neomexicana; surrounded by Pseubotsuga menziesii forest. 7137 ft. 36.996387° N, 104.693069° W; WGS 84, GPS reading 36.996387 -104.693069 WGS 84 GPS reading Small plants in loose soil around rocks. Specimen GPS: 36.996349, -104.693115. Vegetative N RM0025915 N 236 RM 707541 Legler 2008 RM 840958 RM0025914 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene 1. Toxicodendron rydbergii (Small ex Rydb.) Greene
Annotated by Ben Legler on 1/30/2009. RM-120023 Ben Legler 8341 2 6 2008 U.S.A. New Mexico Colfax Vermejo Park Ranch: in Jones Canyon 2.4 air mi NW of its junction with the Canadian River; 11 air mi WNW of Raton. Edge of grassy flats adjacent to small stand of Populus tremuloides, with Quercus gambelii, Robinia neomexicana, Iris missouriensis, Taraxacum. 7301 ft. 36.944721° N, 104.627655° W; WGS 84, GPS reading 36.944721 -104.627655 WGS 84 GPS reading Frequent under Quercus. Photographed. Specimen GPS: 36.944576, -104.62793. Flowering N VPR08824,RM0025914 N 237 RM 707613 Legler 2008 RM 840957 RM0025913 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene 1. Toxicodendron rydbergii (Small ex Rydb.) Greene
Annotated by Ben Legler on 1/30/2009. RM-120034 Ben Legler 8414 4 6 2008 U.S.A. New Mexico Colfax Vermejo Park Ranch: in upper part of East Fork Chimney Canyon 7.3 air mi E of Vermejo Park and 1.7 air mi SW of NM Hwy 555. Dry canyon bottom, with open grassy areas, adjacent forest of Pseudotsuga menziesii and Pinus ponderosa on north-facing slope, and Quercus thickets on south-facing slope. 7964 ft. 36.899052° N, 104.848976° W; WGS 84, GPS reading 36.899052 -104.848976 WGS 84 GPS reading Occasional among rocks. Photographed. Specimen GPS: 36.89592, -104.841064. Vegetative N VPR08858,RM0025913 N 238 RM 707662 Legler 2008 RM 840956 RM0025912 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene 1. Toxicodendron rydbergii (Small ex Rydb.) Greene
Annotated by Ben Legler on 1/30/2009. RM-120047 Ben Legler 8463 5 6 2008 U.S.A. New Mexico Colfax Vermejo Park Ranch: in lower part of Prairie Crow Canyon 1.0 air mi W of Koehler. Dry, east facing rocky slope dominated by Quercus grisea and Quercus ×undulata, with Q. gambelii at base along dry stream channel. 6688 ft. 36.741817° N, 104.640839° W; WGS 84, GPS reading 36.741817 -104.640839 WGS 84 GPS reading Flowers pale green; occasional under Quercus gambelii. Specimen GPS: 36.741516, -104.646797. Flowering N RM0025912 N 239 RM 707786 Legler 2008 RM 840955 RM0025911 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene 1. Toxicodendron rydbergii (Small ex Rydb.) Greene
Annotated by Ben Legler on 1/30/2009. RM-120071 Ben Legler 8587 9 6 2008 U.S.A. New Mexico Colfax Vermejo Park Ranch: at base of The Wall on north side of Leandro Creek. Large overhanging cliff of andesite, with mineral deposits on lower part, southeast exposure, rimmed by talus and Quercus gambelii below, and forest of Pseudotsuga menziesii, Pinus aristata, and Pinus ponderosa above. 9128 ft. 36.886955° N, 105.181168° W; WGS 84, GPS reading 36.886955 -105.181168 WGS 84 GPS reading Occasional in soil under shrubs at cliff base. Specimen GPS: 36.886391, -105.181526. Vegetative N RM0025911 N 240 RM 707931 Legler 2008 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene 1. Toxicodendron rydbergii (Small ex Rydb.) Greene
Annotated by Ben Legler. RM-120094 Ben Legler 8732 12 6 2008 U.S.A. New Mexico Colfax Vermejo Park Ranch: slopes and small gulches on south side of Canadian River opposite mouth of Bog Canyon; 17.7 air mi W of Raton. Dry rocky gulches in partial shade of open Pinus ponderosa forest. 7783 ft. 36.927364° N, 104.760674° W; WGS 84, GPS reading 36.927364 -104.760674 WGS 84 GPS reading Occasional among small outcrops along edges of gulches. Specimen GPS: 36.928204, -104.761993. Vegetative N N 241 RM 708235 Legler 2008 RM 840954 RM0025910 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene 1. Toxicodendron rydbergii (Small ex Rydb.) Greene
Annotated by Ben Legler on 1/30/2009. RM-120137 Ben Legler 9036 24 6 2008 U.S.A. New Mexico Colfax Vermejo Park Ranch: on north side of Tin Pan Canyon 1 air mi upstream from (W of) junction with Dillon Canyon; 6.4 air mi NW of Raton. Dry road cut at base of slope dominated by Quercus ×undulata, with Prunus virginiana, Apocynum androsaemifolium and Toxicodendron rydbergii. 7170 ft. 36.942287° N, 104.542206° W; WGS 84, GPS reading 36.942287 -104.542206 WGS 84 GPS reading Low sub-shrubs, common on road cut. Specimen GPS: 36.942261, -104.542252. Flowering N RM0025910 N 242 RM 710863 Elliott, Emily 2007 USFS 860684 USFS0043815 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-115511 B. E. Nelson 71167 Emily Elliott, Brian Elliott 24 5 2007 U.S.A. Wyoming Park Beartooth Mountains: Shoshone National Forest: Clarks Fork Canyon along Morrison Trail, ca 25-26 air mi NNW of Cody. Gravelly soil with granite boulders. 4440 4600 ft. 44.8247° N, 109.3486° W to 44.8422° N, 109.3215° W; NAD 83, , GPS Reading T56N R104W S12 SE1/4; also NW1/4 S13 44.8247 -109.3486 NAD 83 GPS Reading Flowering N USFS0043815 243 RM 712626 Elliott, Emily 2007 USFS 860835 USFS0043818 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-117595 Emily Elliott 307 B. E. Nelson and Brian Elliott 24 5 2007 U.S.A. Wyoming Park Beartooth Mountains: ca 1/4-3/4 air mi N of Clarks Fork Yellowstone River; ca 26.5 air mi NNW of Cody. Red beds. 4520 5200 ft. 44.8638° N, 109.298° W; WGS 84, , GPS reading T56N R103W S5 W1/2 44.8638 -109.298 NAD 83 GPS reading Buds N USFS0043818 244 RM 712976 Elliott, Emily 2007 USFS 864112 USFS0044255 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-117635 Emily Elliott 657 31 5 2007 U.S.A. Montana Carbon Beartooth Mountains: Custer National Forest: along West Rosebud Creek, on the forest boundary, ca 20 air mi NW of Red Lodge. Wet slope also stream and pond banks. 5960 6040 ft. 45.2891° N, 109.6291° W; WGS 84, , GPS reading T6S R17E S28 NE1/4; also NW1/4 S27 45.2891 -109.6291 NAD 83 GPS reading Flowering and Fruiting N USFS0044255 245 RM 713197 Elliott, Emily 2007 RM 938528 RM0108431 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-115673 Emily Elliott 878 Brian Elliott 4 6 2007 U.S.A. Montana Stillwater Beartooth Mountains: along Mont Hwy 420, ca 3/4 mi N of Beehive, ca 31 air mi NW of Red Lodge. Volcanic tuft (ash substrate) cliffs and surrounding slopes dominated by annual weedy forbs with very few trees, area recently burned. 4680 5360 ft. 45.4885° N, 109.718° W; WGS 84, , GPS Reading T4S R16E S14 N1/2 45.4885 -109.718 NAD 83 GPS Reading Flowering N RM0108431 246 RM 717764 Elliott, Emily 2007 USFS 860834 USFS0043817 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-115854 Ronald L. Hartman 54827 15 6 1996 U.S.A. Wyoming Park Beartooth Mountains: Little Rock Creek, ca 3-4 air mi E of Deep Lake. Rocky slopes and outcrops of sandstone (redbeds) and wet areas along creek. 5200 5800 ft. 44.9018° N, 109.3023° W to 44.9018° N, 109.3278° W; NAD 83, uncertainty 1 mi., Nat. Geog. TOPO! T57N R103W S20 E1/2; also S21 44.9018 -109.3023 NAD 83 1 mi. Nat. Geog. TOPO! Flowering N USFS0043817 247 RM 740166 McNeill 2008 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene 1. Toxicodendron rydbergii (Small ex Rydb.) Greene
Annotated by Rick McNeill. RM-120764 Ronald L. Hartman 86862 Rick McNeill 9 6 2008 U.S.A. Montana Judith Basin Lewis and Clark National Forest: Blacktail Hills: Dry Wolf Creek, Forest Road 251, ca 8 air mi SW of Stanford. Limestone ridge with ponderosa pine, limber pine, and Douglas fir. 1527 m. 46.6285° N, 109.7755° W; NAD 83, uncertainty 1 mi., Nat. Geog. TOPO! T10N R15E S13 46.6285 -109.7755 NAD 83 1 mi. Nat. Geog. TOPO! Flowering N 248 RM 740674 McNeill 2008 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene 1. Toxicodendron rydbergii (Small ex Rydb.) Greene
Annotated by Rick McNeill. RM-120773 Ronald L. Hartman 87422 Rick McNeill 16 6 2008 U.S.A. Montana Cascade Lewis and Clark National Forest: Little Belt Mountains: along Dry Creek, just E of Monarch. Steam side with limestone bluffs. 4623 ft. 47.0946° N, 110.8299° W; NAD 83, uncertainty 0.25 mi., GPS reading T15N R7E S3 47.0946 -110.8299 NAD 83 0 mi. GPS reading Fruiting N 249 RM 745114 Elliott, Emily 2008 USFS 866990 USFS0059218 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-116001 Emily Elliott 6845 Brian Elliott 3 8 2008 03 Aug. 2008 U.S.A. Montana Park Absaroka Range: Gallatin National Forest: near West Boulder River above West Boulder Meadows, ca 29 air mi SW of Big Timber. Dolomite cliffs and loose talus fields below. 5760 6000 ft. 45.5149° N, 110.3408° W; uncertainty 0.5 mi. T4S R11E S2 SW1/4 45.5149 -110.3408 NAD 83 1 mi. Fruiting USFS0059218 250 RM 750828 McNeill 2009 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene 1. Toxicodendron rydbergii (Small ex Rydb.) Greene. RM-120862 Rick McNeill 4912 22 6 2009 U.S.A. Montana Cascade Sluice Boxes State Monument: Little Belt Mountains: along trail, ca 0.6 air mi S of trailhead, west side of Belt Creek. Riparian area at base of limestone cliff, talus. 1213 m. 47.2037° N, 110.9395° W; NAD 83, GPS reading T17N R6E S27 47.2037 -110.9395 NAD 83 GPS reading Fruiting N 251 RM 75298 Elliott, Brian 1998 RM 829409 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene 1. Toxicodendron rydbergii (Small ex Rydb.) Greene
Annotated by Brian Elliott. RM-13142 Ronald L. Hartman 61517 17 6 1998 U.S.A. Colorado Las Animas Wet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: Raton Mesa: I-25 just N of New Mexico on east side of highway. Oak-pinyon-juniper woodland. 7700 ft. 36.9944° N, 104.4799° W 36.9944 -104.4799 N N 252 RM 755600 Hallman 2009 USFS 884987 USFS0053933 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-119471 B. E. Nelson 76716 Hans Hallman 5 6 2009 U.S.A. Montana Carter Custer National Forest: Long Pines: on Exie Road (Forest Road 3119), above and along North Tie Creek, ca 10 air mi WNW of Camp Crook, SD. Thickets and bank of stream. 3560 3740 ft. 45.5866° N, 104.1743° W to 45.5843° N, 104.1711° W; NAD 83, , GPS reading T3S R61E S10 SE1/4; also SW1/4 S11 45.5866 -104.1743 NAD 83 GPS reading Vegetative N USFS0053933 253 RM 755785 Hallman 2009 USFS 884986 USFS0053932 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-119489 B. E. Nelson 76900 Hans Hallman 8 6 2009 U.S.A. Montana Carter Custer National Forest: Ekalaka Hills: on Forest Road 3102A ca 1-1.5 air mi SE of junction of Mont Hwy 323 and Prairie Dale Road, ca 8-8.5 air mi SE of Ekalaka. Steep ponderosa pine covered slopes with cliffs. 3380 3600 ft. 45.8202° N, 104.4159° W to 45.8135° N, 104.4154° W; NAD 83, , GPS reading T1N R59E S29 45.8202 -104.4159 NAD 83 GPS reading Vegetative N USFS0053932 254 RM 755836 Hallman 2009 USFS 884985 USFS0053931 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-119494 B. E. Nelson 76951 Hans Hallman 9 6 2009 U.S.A. South Dakota Harding Custer National Forest: Slim Buttes: from the top down to Window Rock, ca 16-16.5 air mi E of Buffalo. Rocky upper slopes of outcrops and low cliffs with ponderosa pine. 3180 3590 ft. 45.5715° N, 103.2097° W to 45.5695° N, 103.2131° W; NAD 83, , GPS reading T19N R8E S36 W1/2 45.5715 -103.2097 NAD 83 GPS reading Flowering N USFS0053931 255 RM 755865 Hallman 2009 USFS 884984 USFS0053930 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-125944 B. E. Nelson 76980 Hans Hallman 9 6 2009 U.S.A. South Dakota Harding Custer National Forest: Slim Buttes: just N of SD Hwy 20, ca 0.5-1 air mi W of Reva Gap, ca 17.5 air mi E of Buffalo. Chokecherry thicket. 3180 3280 ft. 45.5329° N, 103.1897° W; NAD 83, , GPS reading T18N R8E S7 SW1/4 45.5329 -103.1897 NAD 83 GPS reading Vegetative N USFS0053930 256 RM 755914 Hallman 2009 USFS 885023 USFS0053920 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-119506 B. E. Nelson 77029 Hans Hallman 11 6 2009 U.S.A. South Dakota Harding Custer National Forest: Slim Buttes: ca 0.5 air mi W of SD Hwy 79 on South Divide Road (Forest Road 3148) in and along Deer Draw, ca 23 air mi SE of Buffalo. Bushy ponderosa pine forest on north-facing slope. 3350 3500 ft. 45.3784° N, 103.1734° W to 45.3784° N, 103.1774° W; NAD 83, , GPS reading T16N R8E S5 45.3784 -103.1734 NAD 83 GPS reading Vegetative N USFS0053920 257 RM 756206 Hallman 2009 USFS0050105 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-119538 B. E. Nelson 77319 17 6 2009 U.S.A. Montana Powder River Custer National Forest: Ashland District: Red Shale Campground and vicinity on U. S. Hwy 212 above East Fork Otter Creek, ca 6 air mi E of Ashland. Draw in ponderosa pine woods. 3140 3240 ft. 45.571° N, 106.1467° W; NAD 83, , Nat. Geog. TOPO! T3S R45E S14 SW1/4 45.571 -106.1467 NAD 83 Nat. Geog. TOPO! Flowering N USFS0050105 258 RM 756391 Hallman 2009 USFS 884982 USFS0053928 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-119552 B. E. Nelson 78217 25 7 2009 U.S.A. Montana Powder River Custer National Forest: Ashland District: vicinity of Cow Creek Camp/ Picnicground on Cow Creek ca 5.5 air mi W of Fort Howes Work Center, ca 25 air mi S Ashland. Bushy valley bottom, stream bank, and base of ponderosa pine slope. 3850 ft. 45.3101° N, 106.2427° W; NAD 83, , GPS reading T6S R45E S17 SE1/4 45.3101 -106.2427 NAD 83 GPS reading Fruiting N USFS0053928 259 RM 756735 Hallman 2009 USFS 884981 USFS0053927 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-119587 B. E. Nelson 78559 30 7 2009 U.S.A. South Dakota Harding Custer National Forest: North Cave Hills: ca 0.5 air mi SE of Riley Pass, ca 18 air mi N of Buffalo. Among sandstone blocks just below the top of the cliff. 3290 3320 ft. 45.836° N, 103.471° W; NAD 83, , GPS reading T22N R5E S26 SW1/4 45.836 -103.471 NAD 83 GPS reading Vegetative N USFS0053927 260 RM 757282 Hallman 2009 USFS 883209 USFS0049195 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-119038 Hans Hallman 178 12 6 2009 U.S.A. Montana Carter Custer National Forest: Long Pines: Wickham Gulch, in the vicinity of Wickham Spring Number 1, ca 5.5 air mi NW of Camp Crook, SD. Ponderosa pine-dominated upland slope. 3400 3600 ft. 45.5801° N, 104.0713° W; NAD 83, , GPS reading T3S R62E S16 NE1/4 45.5801 -104.0713 NAD 83 GPS reading Flowering N USFS0049195 261 RM 757341 Hallman 2009 USFS 885026 USFS0053854 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-119043 Hans Hallman 237 13 6 2009 U.S.A. South Dakota Harding Custer National Forest: North Cave Hills: between Sawmill Canyon and Devils Canyon, ca 6.5 air mi WNW of Ludlow. Upland ponderosa pine woodland. 3080 3360 ft. 45.8588° N, 103.5033° W; NAD 83, , GPS reading T22N R5E S16 S1/4 45.8588 -103.5033 NAD 83 GPS reading Flowering N USFS0053854 262 RM 757466 Hallman 2009 USFS 885025 USFS0053855 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-119048 Hans Hallman 362 13 6 2009 U.S.A. South Dakota Harding Custer National Forest: North Cave Hills: in draw and on mesa just N of Forest Road 123, ca 0.5 air mi W of Picnic Spring, ca 6.5 air mi WNW of Ludlow. Mixed ponderosa pine and hardwood draw. 3200 3340 ft. 45.8728° N, 103.5037° W; NAD 83, , GPS reading T22N R5W S15 W1/2; also NE1/4 S16 45.8728 -103.5037 NAD 83 GPS reading Fruiting N USFS0053855 263 RM 757834 Hallman 2009 USFS 885024 USFS0053856 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-119077 Hans Hallman 729 20 6 2009 U.S.A. Montana Rosebud Custer National Forest: Ashland Ranger District: in and around Sawmill Gulch near Jackson Sawmill Spring, ca 1.5 air mi of Poker Jim Butte Lookout and ca 20.5 air mi SSW of Ashland. Sandy hillside above gulch. 3840 4050 ft. 45.3091° N, 106.3627° W; NAD 83, , GPS reading T6S R44E S20 NE1/4; also NW1/4 S21 45.3091 -106.3627 NAD 83 GPS reading Fruiting N USFS0053856 264 RM 757931 Hallman 2009 USFS 885012 USFS0053958 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-119085 Hans Hallman 825 20 6 2009 U.S.A. Montana Rosebud Custer National Forest: Ashland Ranger District: King Mountain Hiking and Riding Area: in and around East Fork O' Dell Creek ca 2.5 air mi E of O' Dell Creek or Forest Road 4131, ca 12.5 air mi S of Ashland. Partially burned ponderosa pine-dominated upland. 3660 3820 ft. 45.4219° N, 106.2651° W; NAD 83, , GPS reading T5S R44E S11 N1/2 45.4219 -106.2651 NAD 83 GPS reading Flowering N USFS0053958 265 RM 758312 Hallman 2009 USFS 885011 USFS0053957 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-119129 Hans Hallman 1206 25 6 2009 U.S.A. Montana Carter Custer National Forest: Ekalaka Hills: in and around the head of Flasted Draw, 1.5-2 air mi SW of Red Hill and ca 3.5 air mi E of Ekalaka. Hardwood draw dominated by green ash and chokecherry. 3640 3700 ft. 45.888° N, 104.4753° W; NAD 83, , GPS reading T2N R58E S35 E1/2 45.888 -104.4753 NAD 83 GPS reading Flowering and Fruiting N USFS0053957 266 RM 758745 Hallman 2009 USFS 883210 USFS0049196 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-119145 Hans Hallman 1639 5 7 2009 U.S.A. Montana Powder River Custer National Forest: Ashland Ranger District: on top of and on southern slope of Home Creek Butte off of Suicide Pass Road spur or Forest Road 4777A, ca 4 air mi NW of Camps Pass and ca 16.5 air mi E of Ashland. Upland woodland dominated by ponderosa pine and grasses; mostly shallow, rocky soils with some rock outcrops. 4300 4400 ft. 45.6027° N, 105.9351° W; NAD 83, , GPS reading T3S R47E S4 W1/2 45.6027 -105.9351 NAD 83 GPS reading Vegetative N USFS0049196 267 RM 758803 Hallman 2009 USFS 885010 USFS0053956 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-119146 Hans Hallman 1697 6 7 2009 U.S.A. Montana Powder River Custer National Forest: Ashland Ranger District: just S of Forest Road 4785, ca 0.5 air mi SW of Camps Pass and ca 19 air mi ESE of Ashland. Ponderosa pine and green ash-dominated draw. 3840 4000 ft. 45.5479° N, 105.9016° W; NAD 83, , GPS reading T3S R47E S27 NE1/4 45.5479 -105.9016 NAD 83 GPS reading Vegetative N USFS0053956 268 RM 759469 Hallman 2009 USFS 883211 USFS0049197 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-119174 Hans Hallman 2264 17 7 2009 U.S.A. South Dakota Harding Custer National Forest: Slim Buttes: in and around draws SE of junction of North Divide or Forest Road 3125 and Forest Road 3145 in the vicinity of Camp Spring, ca 4.5 air mi S of Reva Gap, ca 19 air mi ESE of Buffalo. Draw dominated by green ash and aspen. 3460 3580 ft. 45.4642° N, 103.191° W; NAD 83, , GPS reading T17N R8E S6 45.4642 -103.191 NAD 83 GPS reading Fruiting N USFS0049197 269 RM 759982 Hallman 2009 USFS 885009 USFS0053955 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-119209 Hans Hallman 2778 23 7 2009 U.S.A. Montana Powder River Custer National Forest: Ashland Ranger District: in and around Seymour Reservoir, ca 0.5 air mi N of Taylor Creek or Forest Road 4127, ca 7 air mi SE of Fort Howes and ca 27 air mi SSE of Ashland. About reservoir. 3720 3800 ft. 45.2465° N, 106.0316° W; NAD 83, , GPS reading T7S R47E S7 W1/4; also T7S R46E NE1/4 S12 45.2465 -106.0316 NAD 83 GPS reading Fruiting N USFS0053955 270 RM 760117 Hallman 2009 USFS 885008 USFS0053954 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-119219 Hans Hallman 2912 26 7 2009 U.S.A. South Dakota Harding Custer National Forest: Slim Buttes: in the vicinity of Willard Gap off of Rimrock Trail or Forest Road 3150, ca 3 air mi ESE of Summit Pass on SD Hwy 79 and ca 26.5 air mi SE of Buffalo. Near the rim of a cliff with scattered ponderosa pine, junipers, and grasses. 3380 3480 ft. 45.3493° N, 103.1066° W; NAD 83, , GPS reading T16N R8E S14 N1/2 45.3493 -103.1066 NAD 83 GPS reading Fruiting N USFS0053954 271 RM 760211 Hallman 2009 USFS 885007 USFS0053953 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-119225 Hans Hallman 3006 26 7 2009 U.S.A. Montana Carter Custer National Forest: Long Pines: in the vicinity of Red Bluff Spring, just W of Forest Road 3117, ca 5 air mi SSW of Mill Iron and ca 16.5 air mi ESE of Ekalaka. East-facing rocky slope with mix of ponderosa pine, green ash, and hardwood shrubs. 3200 3300 ft. 45.7857° N, 104.2355° W; NAD 83, , GPS reading T1S R61E S6 N1/2 45.7857 -104.2355 NAD 83 GPS reading Fruiting N USFS0053953 272 RM 760659 Hallman 2009 USFS 885006 USFS0053952 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-119249 Hans Hallman 3452 30 7 2009 U.S.A. Montana Carter Custer National Forest: Ekalaka Hills: just NW of Ekalaka Park off of Forest Road 3818A, ca 1/4 air mi N of Hidden Spring, ca 6.5 air mi SSE of Ekalaka. Ponderosa pine-dominated upland. 3900 4000 ft. 45.8005° N, 104.5173° W; NAD 83, , GPS reading T1N R58E S33 N1/2 45.8005 -104.5173 NAD 83 GPS reading Fruiting N USFS0053952 273 RM 760856 Hallman 2009 USFS 885005 USFS0053951 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-119256 Hans Hallman 3648 2 8 2009 U.S.A. Montana Powder River Custer National Forest: Ashland Ranger District: just NW of unnamed 4WD road ca 1.5 air mi SW of The Breaks Coulee, ca 15 air mi NE of Ashland. Ponderosa pine and grass-dominated draw. 3100 3200 ft. 45.7772° N, 106.1018° W; NAD 83, , GPS reading T1S R46E S6 SE1/4 45.7772 -106.1018 NAD 83 GPS reading Fruiting N USFS0053951 274 RM 760965 Hallman 2009 USFS 885004 USFS0053950 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-119262 Hans Hallman 3757 4 8 2009 U.S.A. South Dakota Harding Custer National Forest: South Cave Hills: in and around Timber Canyon, between Forest roads 3113 and 3137, ca 11.5 air mi N of Buffalo. Green ash-dominated draw. 3340 3400 ft. 45.7479° N, 103.5604° W; NAD 83, , GPS reading T21N R5E S30 SW1/4 45.7479 -103.5604 NAD 83 GPS reading Fruiting N USFS0053950 275 RM 761028 Hallman 2009 USFS 885003 USFS0053949 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-119265 Hans Hallman 3820 4 8 2009 U.S.A. South Dakota Harding Custer National Forest: South Cave Hills: in and around McKenzie Gulch, S of Forest Road 3113, ca 10 air mi N of Buffalo. Southwest-facing rocky, grass dominated slope. 3140 3240 ft. 45.7265° N, 103.5405° W; NAD 83, , GPS reading T20N R5E S5 45.7265 -103.5405 NAD 83 GPS reading Fruiting N USFS0053949 276 RM 761275 Hallman 2009 USFS 885002 USFS0053948 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-119277 Hans Hallman 4066 13 8 2009 U.S.A. Montana Powder River Custer National Forest: Ashland Ranger District: just N of Fifteenmile Creek or Forest Road 4094, ca 1 air mi NNE of Dalzells Spring, ca 21 air mi ESE of Ashland. Green ash-dominated draw. 3780 3840 ft. 45.4037° N, 105.9251° W; NAD 83, , GPS reading T5S R47E S9 SE1/4; also SW1/4 S10, NW1/4 S15, and NE1/4 S16 45.4037 -105.9251 NAD 83 GPS reading Fruiting N USFS0053948 277 RM 761480 Hallman 2009 USFS 885001 USFS0053947 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-119286 Hans Hallman 4271 G. Gust 16 8 2009 U.S.A. South Dakota Harding Custer National Forest: North Cave Hills: in a tributary of Schleichart Draw above Schleichart Draw Reservoir, W of Forest Road 3130, ca 17 air mi NNE of Buffalo. Grass and chokecherry-dominated east-facing slope with rock outcrops. 3400 ft. 45.831° N, 103.4707° W; NAD 83, , GPS reading T22N R5E S35 45.831 -103.4707 NAD 83 GPS reading Fruiting N USFS0053947 278 RM 761618 Hallman 2009 USFS 885000 USFS0053946 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-119289 Hans Hallman 4409 G. Gust 16 8 2009 U.S.A. Montana Carter Custer National Forest: Long Pines: just W of Forest Road 3117, in and around unnamed pond in Spring Canyon, ca 16 air mi NW of Camp Crook, SD. Above margin of unnamed still-water pond. 3620 3720 ft. 45.7243° N, 104.2192° W; NAD 83, , GPS reading T1S R61E S32 NE1/4 45.7243 -104.2192 NAD 83 GPS reading Fruiting N USFS0053946 279 RM 761785 Hallman 2009 USFS 884999 USFS0053945 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-119307 Hans Hallman 4575 G. Gust 18 8 2009 U.S.A. Montana Carter Custer National Forest: Ekalaka Hills: in and E of Stagville Draw on Forest Road 3813 at Stagville Spring, SE past Forest Road 3813B to east boundary of Forest, ca 5.5 air mi SSE of Ekalaka. Green ash and Prunus spp.-dominated draw. 3790 3900 ft. 45.8179° N, 104.5024° W; NAD 83, , GPS reading T1N R58E S27 NW1/4; also NE1/4 S28 and SW1/4 S21 45.8179 -104.5024 NAD 83 GPS reading Fruiting N USFS0053945 280 RM 761881 Hallman 2009 USFS 884998 USFS0053944 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-119308 Hans Hallman 4605 G. Gust 19 8 2009 U.S.A. Montana Carter Custer National Forest: Ekalaka Hills: just off Opechee Park or Forest Road 3101, ca 0.5 road mi SE of private inholding border with Forest Service land, ca 4.5 air mi ESE of Ekalaka. Aspen and ponderosa pine-dominated draw. 3790 3880 ft. 45.8635° N, 104.4662° W; NAD 83, , GPS reading T1N R58E S12 NW1/4 45.8635 -104.4662 NAD 83 GPS reading Fruiting N USFS0053944 281 RM 76968 Elliott, Brian 1998 RM 829407 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene 1. Toxicodendron rydbergii (Small ex Rydb.) Greene
Annotated by Brian Elliott. RM-13192 Ronald L. Hartman 63180 Craig Freeman 13 8 1998 U.S.A. Colorado Pueblo Wet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: ca 1.5 road mi E of Rye. Roadside and road cut. 6400 ft. 37.9184° N, 104.9076° W T24S R67W S32 NE1/4 37.9184 -104.9076 N N 282 RM 772360 Elliott, Brian 2010 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-130517 Brian Elliott 14882 2 6 2010 U.S.A. Wyoming Crook Black Hills National Forest: ca 12.5 air mi W (265°) of Spearfish, SD, E of Sand Creek Road in the vicinity of Dugout Gulch; S of Dugout Creek. North-facing slope S of Dugout Creek: Betula papyrifera/Ostrya virginiana woodland. 3996 ft. zone 13N, 570666.22E, 4925292.87N; NAD 83, GPS reading T52N R60W S19 SW1/4 SW1/4 Survey ID: 10D002 Fruiting N N 283 RM 773522 Missouri Plateau RM 154479 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-131061 H. F. Bergman s.n. 9 7 1910 U.S.A. North Dakota Richland Wahpeton. Bank of slough. Vegetative N N 284 RM 773525 Missouri Plateau RM 61824 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-131063 S. A. Skinner 2 U.S.A. South Dakota no county Common. Vegetative N N 285 RM 773527 Missouri Plateau RM 223002 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-131064 Harry H. Cheeseman s.n. 5 6 1913 U.S.A. Nebraska Kearney Minden. Flowering and Fruiting N N 286 RM 773529 Missouri Plateau RM 223001 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-131067 Harry Hapeman s.n. 3 6 1891 U.S.A. Nebraska Kearney Minden. Flowering N N 287 RM 773531 Missouri Plateau RM 275501 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-131068 Elray S. Nixon 53 30 5 1964 U.S.A. Nebraska Sheridan Metcalf Public Hunting Grounds, 13 mi N of Hay Springs. Open ridges and Pinus ponderosa forest. 3300 ft. Common. Flowering N N 288 RM 773532 Missouri Plateau USFS 512363 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-124388 Theodore Krueger s.n. 4 6 1914 U.S.A. Nebraska no county Nebraska National Forest. Flowering N N 289 RM 773534 Missouri Plateau RM 18351 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-131070 J. M. Bates s.n. 8 7 1899 U.S.A. Nebraska Brown Longpine. Fruiting N N 290 RM 773536 Missouri Plateau USFS 512368 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-131072 Albert H. Nee 672 10 6 1928 U.S.A. Montana Gallatin Gallatin National Forest: Rocky Canyon. With sage, oregon grape. 5000 ft. T2S R7E S30 Fruiting N N 291 RM 773537 Missouri Plateau USFS 512367 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-124826 Arthur Cramer 59 24 6 1924 U.S.A. Montana Helena National Forest: Bear Gulch. South slope; gravelly rocky soil; open ground with Apocynaceae, Symphoricarpos, Spirea. 5000 ft. T12N R2W Flowering N N 292 RM 773538 Missouri Plateau USFS 512365 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-131073 H. R. Flint 2 2 7 1917 U.S.A. Montana Sioux National Forest: Ekalaka Division. North slope; with yellow pine, oregon grape; heavy shade. 5700 ft. Common on all aspects and sites. Fruiting N N 293 RM 773539 Missouri Plateau USFS 512366 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-131074 H. R. Flint 40 4 5 1917 U.S.A. Montana Custer (formerly Sioux) National Forest: Long Pines Division. Fresh, moist soil. 3800 ft. Common. Fruiting N N 294 RM 777711 Hallman 2010 USFS 884997 USFS0053943 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-130055 Hans Hallman 5212 24 6 2010 U.S.A. Montana Powder River Custer National Forest: Ashland Ranger District: E of Forest Road 4775, ca 1.5 air mi SE of East Fork Otter Creek Road, ca 2.5 air mi SSW of Holiday Campground, ca 13.5 air mi E of Ashland. Ponderosa pine-dominated forest with scattered rock outcrops and grass-dominated openings. 3640 3900 ft. 45.6057° N, 106.0025° W; NAD 83, , GPS reading T3S R46E S1 NW1/4; also S2 NE1/4 45.6057 -106.0025 NAD 83 GPS reading Fruiting N USFS0053943 295 RM 778265 Hallman 2010 USFS 884996 USFS0053942 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-130084 Hans Hallman 5766 4 7 2010 U.S.A. Montana Powder River Custer National Forest: Ashland Ranger District: just N of Forest Road 4410, ca 2 air mi E of Yager Butte, ca 17 air mi ESE of Ashland. In and around flowing-water hardwood draw with green ash, boxelder, chokecherry, snowberry, and Monarda. 3660 3800 ft. 45.4586° N, 105.9843° W; NAD 83, , GPS reading T4S R47E S19 S1/4; also S30 N1/2 45.4586 -105.9843 NAD 83 GPS reading Fruiting N USFS0053942 296 RM 778302 Hallman 2010 USFS 884995 USFS0053941 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-130347 Hans Hallman 5803 6 7 2010 U.S.A. Montana Powder River Custer National Forest: Ashland Ranger District: in vicinity between Holiday Campground and SE to Sutton Spring, E of Forest Road 4777, ca 15 air mi ENE of Ashland. Ponderosa pine forest with dense groundcover of Berberis and Toxicodendron. 3940 4000 ft. 45.6376° N, 105.9735° W; NAD 83, , GPS reading T2S R47E S19 SE1/4; also S30 NE1/4 and S29 NW1/4 45.6376 -105.9735 NAD 83 GPS reading Fruiting N USFS0053941 297 RM 778561 Hallman 2010 USFS 884994 USFS0053940 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-130364 Hans Hallman 6062 12 7 2010 U.S.A. Montana Powder River Custer National Forest: Ashland Ranger District: in the vicinity of Griffin Pass, E of Forest Road 4431, ca 21.5 air mi ENE of Ashland. Northeast-facing slope dominated by ponderosa pine and grasses with scattered rock outcrops. 4040 4140 ft. 45.6547° N, 105.8321° W; NAD 83, , GPS reading T2S R48E S20 NW1/4; also S17 SW1/4 45.6547 -105.8321 NAD 83 GPS reading Fruiting N USFS0053940 298 RM 778653 Hallman 2010 USFS 884993 USFS0053939 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-130370 Hans Hallman 6154 13 7 2010 U.S.A. Montana Powder River Custer National Forest: Ashland Ranger District: in the vicinity of East Fork Spring, just S of East Fork Otter Creek Road, ca 14 air mi ENE of Ashland. Dense ponderosa pine-dominated forest. 3780 3920 ft. 45.6334° N, 105.9905° W; NAD 83, , GPS reading T2S R46E S25 45.6334 -105.9905 NAD 83 GPS reading Fruiting N USFS0053939 299 RM 778766 Hallman 2010 USFS 884992 USFS0053938 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-130373 Hans Hallman 6267 15 7 2010 U.S.A. Montana Carter Custer National Forest: Ekalaka Hills: just E of Forest Road 3814, ca 1 air mi ENE of Smith Well, ca 5.5 mi SSW of Ekalaka. Moist draw dominated by quaking aspen. 3830 3900 ft. 45.816° N, 104.5674° W; NAD 83, , GPS reading T1N R58E S19 SW1/4; also S30 NW1/4 45.816 -104.5674 NAD 83 GPS reading Fruiting N USFS0053938 300 RM 7791 Taylor, Amy 1998 RM 666238 RM0215601 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-511 Amy J. Roderick 6727 18 7 1998 U.S.A. Wyoming Natrona Upper North Platte and Laramie River Drainages: Alcova Reservoir: Fremont Canyon at end of Lake Shore Drive, ca 4 air mi SW of Alcova townsite. Rocky canyon opening into reservoir. 5540 ft. 42.5112° N, 106.7867° W T29N R83W S4 42.5112 -106.7867 Vegetative N RM0215601 N 301 RM 779138 Hallman 2010 USFS 884991 USFS0053937 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-130386 Hans Hallman 6639 23 7 2010 U.S.A. South Dakota Harding Custer National Forest: Slim Buttes: in the vicinity of Road Draw Spring No. 2, SE of JB Pass, E of Forest Road 3148, ca 20 air mi SE of Buffalo. In vicinity of hardwood draw with green ash, boxelder, and chokecherry. 3420 3480 ft. 45.4074° N, 103.214° W; NAD 83, , GPS reading T17N R8E S25 W1/2 45.4074 -103.214 NAD 83 GPS reading Fruiting N USFS0053937 302 RM 779318 Hallman 2010 USFS 884990 USFS0053936 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-130394 Hans Hallman 6819 27 7 2010 U.S.A. Montana Powder River Custer National Forest: Ashland Ranger District: in the vicinity of Cow Creek, just S of Forest Road 4095, ca 1.5 air mi W of Otter Creek Road or Mont Hwy 484, ca 2 air mi WSW of Fort Howes. Burned hillside with rocky, sandy soils and scattered rock outcrops. 3440 3600 ft. 45.292° N, 106.1827° W; NAD 83, , GPS reading T6S R45E S26 NE1/4 45.292 -106.1827 NAD 83 GPS reading Fruiting N USFS0053936 303 RM 779449 Hallman 2010 USFS 884989 USFS0053935 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-130401 Hans Hallman 6950 28 7 2010 U.S.A. Montana Powder River Custer National Forest: Ashland Ranger District: in the vicinity of Dry Gulch Reservoir E of Forest Road 4432D, ca 3.5 air mi E of Fort Howes. Cornus and Toxicodendron-dominated draw with green ash. 3760 3840 ft. 45.2989° N, 106.0856° W; NAD 83, , GPS reading T6S R46E S22 SE1/4 45.2989 -106.0856 NAD 83 GPS reading Fruiting N USFS0053935 304 RM 779569 Hallman 2010 USFS 884988 USFS0053934 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-130403 Hans Hallman 7070 30 7 2010 U.S.A. Montana Powder River Custer National Forest: Ashland Ranger District: in Bridge Canyon, ca 1 air mi E of Taylor Butte, ca 2 air mi ESE of Fort Howes. East-facing slope in hardwood draw with Prunus and grass-dominated understory. 45.2869° N, 106.1179° W; NAD 83, , GPS reading T6S R46E S28 W1/4; also S29 E1/4 45.2869 -106.1179 NAD 83 GPS reading Fruiting N USFS0053934 305 RM 781567 Kirkpatrick, Michael 2010 USFS Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-128376 B. E. Nelson 79017 Lori E. Brummer 2 5 2010 U.S.A. Colorado Mesa In De Beque Canyon along the Colorado River at the southeast base of Beavertail Mountain, ca 7.5 air mi NE of Palisade. Base of sandstone cliffs along old highway in the canyon. 4800 ft. 39.1923° N, 108.2712° W; GPS reading T10S R98W S13 NE1/4; also SW1/4 S7 and NW1/4 S18 39.1923 -108.2712 NAD 83 GPS reading Fruiting N 306 RM 788566 Charboneau 2010 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-128624 B. E. Nelson 80667 29 7 2010 U.S.A. Montana Phillips Larb Hills (South): at the head of Telegraph Creek, ca 47 air mi S of Saco; ca 44 air mi SSE of Malta. Boxelder-chokecherry-buffaloberry-Rocky Mountain juniper-cottonwood thickets in the valley bottom and ravenes. 2900 3100 ft. 47.7983° N, 107.4928° W; NAD 83, GPS reading T24N R33E S33 W1/2 47.7983 -107.4928 NAD 83 GPS reading Vegetative N 307 RM 788598 Charboneau 2010 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-129359 B. E. Nelson 80699 29 7 2010 U.S.A. Montana Phillips Larb Hills (South): near the head of South Fork Shotgun Coulee ca 1 air mi N of Coal Mine Hill, ca 44-45 air mi S of Saco; ca 40 air mi SSE of Malta. Toxicodendron-Rhus-Acer-Symphoricarpos thickets in the bottoms. 3000 3180 ft. 47.8508° N, 107.5327° W to 47.8563° N, 107.5343° W; NAD 83, GPS reading T24N R33E S7 W1/2 47.8508 -107.5327 NAD 83 GPS reading Vegetative N 308 RM 788660 Charboneau 2010 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-129376 B. E. Nelson 80761 31 7 2010 U.S.A. Montana Phillips Ca 2-2.5 air mi E of Frenchman Creek and ca 0.5 mi S of Saskatchewan, ca 53 air mi NNE of Malta. Prunus thicket on north-facing slope. 2780 2940 ft. 48.9924° N, 107.2585° W to 48.9894° N, 107.2545° W; NAD 83, GPS reading T37N R34E S4 South1/2 48.9924 -107.2585 NAD 83 GPS reading Vegetative N 309 RM 792070 Charboneau 2010 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-127938 Joseph L. M. Charboneau 2613 31 7 2010 U.S.A. Montana Valley Charles M. Russell National Wildlife Refuge: on Fourth Ridge, vicinity of Refuge Road 333, ca 2 air mi ESE of Berger Reservoir, ca 14 air mi SW of Fort Peck; ca 25 air mi S of Glasgow. Beneath closed juniper thicket. 2400 2650 ft. 47.8731° N, 106.6408° W; NAD 83, GPS reading T25N R39E S36 SW1/4; also S35 SE1/4 47.8731 -106.6408 NAD 83 GPS reading Vegetative N 310 RM 792522 Charboneau 2010 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-133657 Joseph L. M. Charboneau 3065 8 8 2010 U.S.A. Montana Phillips Matador Ranch: W of Stage Road (Mont Hwy 204), Little Warm Creek, ca 8 air mi WNW of Veseth Reservoir, ca 10 air mi ENE of Zortman; ca 35 air mi SW of Malta. Partially wooded draw bottom. 2940 3050 ft. 47.9823° N, 108.3292° W; NAD 83, GPS reading T26N R26E S26 NE1/4 47.9823 -108.3292 NAD 83 GPS reading Vegetative N 311 RM 792912 Charboneau 2010 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-128060 Joseph L. M. Charboneau 3455 19 8 2010 U.S.A. Montana Phillips Frenchman Creek, E of Turkey Track Road, ca 8 air mi E of Salsberg Reservoir, ca 28 air mi NNE of Saco; ca 45.5 air mi NE of Malta. Swale and steep hillside with chokecherry and serviceberry. 2470 2740 ft. 48.8487° N, 107.2778° W to 48.8558° N, 107.2737° W; NAD 83, GPS reading T36N R34E S28 NE1/4 48.8487 -107.2778 NAD 83 GPS reading Vegetative N 312 RM 793006 Charboneau 2010 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-128071 Joseph L. M. Charboneau 3549 21 8 2010 U.S.A. Montana Phillips Little 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. Draw bottom upslope. 4070 4330 ft. 47.958° N, 108.4915° W to 47.9576° N, 108.4857° W to 47.962° N, 108.487° W; NAD 83, GPS reading T26N R25E S34 SE1/4; also T25N R25E S3 NE1/4 47.958 -108.4915 NAD 83 GPS reading Vegetative N 313 RM 79485 Elliott, Brian 1999 RM 829295 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene 1. Toxicodendron rydbergii (Small ex Rydb.) Greene
Annotated by Ronald L. Hartman. RM-13275 Brian Elliott 6358 Elizabeth Mark 3 6 1999 U.S.A. Colorado Fremont Wet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: Wet Mountains: up Five Point Gulch, ca 1.5 mi E of Texas Creek; W of Pueblo on U.S. Hwy 50. Canyon and west side of ridge in pinyon-juniper. 7000 ft. 38.427° N, 105.5791° W T19S R73W S6; also E1/2 S8, E1/2 S21, E1/2 S9, W1/2 S3, S2, S5 38.427 -105.5791 Flowering N N 314 RM 79713 Elliott, Brian 1999 RM 829294 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene 1. Toxicodendron rydbergii (Small ex Rydb.) Greene
Annotated by Ronald L. Hartman. RM-13281 Brian Elliott 6583 Elizabeth Mark 6 6 1999 U.S.A. Colorado Fremont Wet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: Wet Mountains: along Newlin Creek from Florence Mountain Park at Newlin Trailhead on County Road 15, S of Florence. Picea engelmannii/Pseudotsuga menziesii. 7500 ft. 38.2677° N, 105.1879° W T20S R70W S35 SW1/4; also SE1/4 S34, SE1/4 S33 and T19N R70W N1/2 S3 38.2677 -105.1879 Fruiting N N 315 RM 80469 Elliott, Brian 1999 RM 829293 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene 1. Toxicodendron rydbergii (Small ex Rydb.) Greene
Annotated by Ronald L. Hartman. RM-13310 Brian Elliott 7332 Elizabeth Mark and Kenneth Elliott 17 6 1999 U.S.A. Colorado Custer Wet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: Wet Mountains: San Isabel National Forest: up Mason Gulch off Forest Road 388, ca 2 air mi SE of Greenwood. Mixed ponderosa pine-gambel oak. 7400 ft. 38.2102° N, 105.1089° W T21S R69W S26 S1/2; also N1/2 S35 38.2102 -105.1089 Fruiting N N 316 RM 80751 Elliott, Brian 1999 RM 829292 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene 1. Toxicodendron rydbergii (Small ex Rydb.) Greene
Annotated by Ronald L. Hartman. RM-13320 Brian Elliott 7612 21 6 1999 U.S.A. Colorado Pueblo Wet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: ca 1 mi E of Rye on Colo Hwy 165. Roadside. 6500 ft. 37.9184° N, 104.9076° W T24S R67W S32 N1/2 37.9184 -104.9076 Flowering N N 317 RM 8103 Taylor, Amy 1998 RM 666237 RM0215609 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-517 Amy J. Roderick 7006 20 7 1998 U.S.A. Wyoming Carbon Upper North Platte and Laramie River Drainages: Pathfinder Reservoir: North Platte River E of BLM Road 3108, ca 4.2 air mi N of Kortes Dam. Greasewood flats at rivers edge; disturbed. 5860 ft. 42.2385° N, 106.8902° W T26N R84W S9 SE1/4; also S16 42.2385 -106.8902 Vegetative N RM0215609 N 318 RM 81667 Elliott, Brian 1999 RM 829291 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene 1. Toxicodendron rydbergii (Small ex Rydb.) Greene
Annotated by Ronald L. Hartman. RM-13345 Brian Elliott 8524 Elizabeth Mark 9 7 1999 U.S.A. Colorado Custer Wet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: Wet Mountains: San Isabel National Forest: north side of Colo Hwy 96, ca 1 mi E of McKenzie Junction (jct of Colo hwys 165 and 96). Pinus ponderosa-Pseudotsuga menziesii woodland. 8000 ft. 38.181° N, 105.1638° W T21S R70W S36 SW1/4 38.181 -105.1638 Fruiting N N 319 RM 81796 Elliott, Brian 1999 RM 829290 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene 1. Toxicodendron rydbergii (Small ex Rydb.) Greene
Annotated by Ronald L. Hartman. RM-13348 Brian Elliott 8653 Elizabeth Mark 9 7 1999 U.S.A. Colorado Pueblo Wet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: on Colo Hwy 96 at the junction of Siloam Road, ca 6 air mi E of Wetmore. Irrigation ditch and roadside. 5450 ft. 38.254° N, 104.9808° W T21S R68W S3 NE1/4 38.254 -104.9808 Fruiting N N 320 RM 819962 Charboneau 2011 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-141905 Joseph L. M. Charboneau 4405 4 6 2011 U.S.A. Montana Phillips Assiniboine Creek and ridge to the NE, ca 2.5 air mi W of the Milk River, ca 8 air mi NNE of Malta. Wooded thickets on hillsides and bottoms. 2330 2540 ft. 48.4619° N, 107.8488° W to 48.4547° N, 107.8551° W; NAD 83, GPS reading T31N R30E S8 E1/2 48.4619 -107.8488 NAD 83 GPS reading Buds N 321 RM 820061 Charboneau 2011 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-141920 Joseph L. M. Charboneau 4505 4 6 2011 U.S.A. Montana Phillips Spring Coulee, W of U.S. Hwy 191, ca 1.5 air mi W of the Milk River, ca 10.5 air mi NNE of Malta. Wooded thickets. 2270 2500 ft. 48.496° N, 107.7649° W to 48.4936° N, 107.771° W; NAD 83, GPS reading T32N R30E S36 N1/2 48.496 -107.7649 NAD 83 GPS reading Vegetative N 322 RM 820856 Charboneau 2011 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-142026 Joseph L. M. Charboneau 5300 19 6 2011 U.S.A. Montana Valley Windy Ridge and Papoose Creek, ca 1 air mi SSW of Erie Reservoir, ca 15 air mi N of Hinsdale; ca 36 air mi NW of Glasgow. Coulee bottom thickets. 2560 2710 ft. 48.6081° N, 107.085° W; NAD 83, GPS reading T33N R35E S24 N1/2 48.6081 -107.085 NAD 83 GPS reading Vegetative N 323 RM 822633 Charboneau 2011 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-142168 Joseph L. M. Charboneau 7085 9 7 2011 U.S.A. Montana Valley Opheim Hills: Slaughter Coulee, ca 6.5 air mi NNE of Pikes Peak, ca 6.5 air mi WNW of Opheim; ca 48 air mi NNE of Glasgow. Aspen grove on north-facing slope. 3120 3250 ft. 48.8777° N, 106.5374° W to 48.8812° N, 106.535° W; NAD 83, GPS reading T36N R40E S18 NW1/4 48.8777 -106.5374 NAD 83 GPS reading Vegetative N 324 RM 824433 Charboneau 2011 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-142347 Joseph L. M. Charboneau 8584 2 8 2011 U.S.A. Montana Valley Charles M. Russell National Wildlife Refuge: Cut Throat Coulee at terminus of Refuge Road 325, ca 4.5 air mi N of Bonetrail Boat Ramp, ca 44 air mi WSW of Fort Peck; ca 43 air mi SW of Glasgow. Coulee bottom and sides shaded by ponderosa pine forest on the north-facing slopes on sandy to clay soil. 2720 2920 ft. 47.7396° N, 107.2542° W to 47.7386° N, 107.2674° W; NAD 83, GPS reading T23N R35E S20 South1/2; also S19 SE1/2 47.7396 -107.2542 NAD 83 GPS reading Fruiting N 325 RM 828600 Kirkpatrick, Michael 2011 USFS 898419 USFS0059886 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-142998 Michael K. Kirkpatrick 4749 17 5 2011 U.S.A. Colorado Mesa Colorado River Valley: De Beque Canyon along I-70 N of Colo Hwy 65, ca 18 air mi ENE of Grand Junction. Sandy slopes beneath bluffs. 4920 ft. 39.2049° N, 108.2643° W; NAD 83, , GPS reading T10S R97W S7 SE1/4 NW1/4 39.2049 -108.2643 NAD 83 GPS reading Fruiting N USFS0059886 326 RM 844477 Hallman 2009 USFS 884983 USFS0053929 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-119538 B. E. Nelson 77319 17 6 2009 U.S.A. Montana Powder River Custer National Forest: Ashland District: Red Shale Campground and vicinity on U. S. Hwy 212 above East Fork Otter Creek, ca 6 air mi E of Ashland. Draw in ponderosa pine woods. 3140 3240 ft. 45.571° N, 106.1467° W; NAD 83, , Nat. Geog. TOPO! T3S R45E S14 SW1/4 45.571 -106.1467 NAD 83 Nat. Geog. TOPO! Flowering N USFS0053929 327 RM 853872 Irwin 2012 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-154127 Joshua J. Irwin 8359 28 5 2012 U.S.A. Idaho Lemhi Salmon River canyon: lower Cove Creek where trail crosses the stream, 8.0 air mi WSW of Shoup. <25 individuals estimated in mesic soil within herbaceous riparian vegetation, 14 degree slope, SSE aspect, gneiss geology. 3243 ft. T23N R17E S13 45.32571 -114.42543 NAD 83 30 m. Flowering N N 328 RM 857389 Irwin 2010 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-128834 Joshua J. Irwin 1448 24 6 2010 U.S.A. Idaho Lemhi Salmon National Forest: Salmon River Mountains: Hot Springs on Hot Springs Creek, 5.6 air mi SSW of Shoup. Well developed soil in mesic herbaceous riparian vegetation; 4° slope, WNW aspect; granite geology. 4277 ft. 45.30695° N, -114.33837° W; NAD83, uncertainty 10 m., Field Notes T23N R18E S22 45.30695 -114.33837 NAD83 10 m. N N Field Notes Population is dominant throughout the area. Flowering N N 329 RM 86377 Refsdal 1994 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-13536 C. H. Refsdal 1640 11 7 1994 U.S.A. Utah Daggett North Slope Uinta Mountains: Flaming Gorge National Recreation Area: ca 2 air mi S of Dutch John on the east side of the Green River, south of Flaming Gorge Dam. Pinyon-juniper woodlands, some riparian areas, and west-facing red sandstone cliffs. 5600 ft. T2N R22E S15 E1/2 40.9088 -109.424 1 mi. Calc. from TRS Fruiting N N 330 RM 865466 Irwin 2011 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-155164 Ronald L. Hartman 91548 Emma E. Stewart 13 6 2011 U.S.A. Idaho Lemhi Northern Salmon River Mountains: Salmon Wild and Scenic River: Salmon River Trail from ca 1 mi E to Horse Creek. Trail with steep boulder field on either side, shrubs scattered along river. 2850 2900 ft. 45° 23.704' N, 114° 42.923' W to 45° 23.781' N, 114° 43.915' W; NAD 83, , GPS reading T24N R14E S27 N1/2 45.395067 -114.715383 NAD 83 GPS reading Flowering N 331 RM 876544 Brummer 2011 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene 1. Toxicodendron rydbergii (Small ex Rydb.) Greene. RM-143299 Lori E. Brummer 3335 29 5 2011 U.S.A. Colorado Montrose Uncompahgre Plateau: Freshet Draw, W of Happy Canyon, ca 6 air mi SSW of Montrose. Bottom of draw in sandstone canyon. 6280 6330 ft. 38.3959° N, 107.8999° W to 38.3991° N, 107.8979° W; NAD 83, , GPS reading T48N R9W S19 SE1/4 38.3959 -107.8999 NAD 83 GPS reading Fruiting N 332 RM 878090 Brummer 2011 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene 1. Toxicodendron rydbergii (Small ex Rydb.) Greene. RM-143666 Lori E. Brummer 4882 8 7 2011 U.S.A. Colorado Mesa Uncompahgre Plateau: Dillard Mesa, junction of Forest Road 504 and Forest Road 501, ca 24 air mi SW of Delta. Cracks in sandstone in ponderosa pine. 8320 8400 ft. 38.5125° N, 108.4212° W; NAD 83, , GPS reading T49N R14W S15 W1/2 38.5125 -108.4212 NAD 83 GPS reading Flowering N 333 RM 881756 Irwin 2010 RM Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-133442 Ronald L. Hartman 89541 18 5 2010 U.S.A. Idaho Lemhi Salmon National Forest: Salmon River Mountains: Salmon Wild and Scenic River: Wheat Creek to 0.7 air mi to NW. Base of rocky to boulder covered slopes at edge of trail. 2939 2945 ft. 45.3703° N, 114.6875° W to 45.3783° N, 114.6994° W; NAD 83, , GPS reading T24N R14E S35 E1/4 45.3703 -114.6875 NAD 83 GPS reading Flowering N 334 RM 906897 RMHERB2 RM 957804 RM0219614 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-49181 Patricia P. Douglas 88 B. E. Nelson, Carlos A. Popolizio, Rosalie M. Smith 13 6 1995 U.S.A. Wyoming Platte Camp Guernsey: Broom Creek Canyon, ca 0.8 km S of Patten Creek, ca 0.8 km SE of Spring Creek. Ephemeral creek and canyon walls; canyon walls and slopes; sandy loam creek bottom and calcareous sandstone walls; with Bromus inermis, Pinus ponderosa, Juniperus scopulorum, Ribes spp. 1469 m. zone DMC, 519000E, 4695500N to 519000E, 4694800N; unknown, GPS reading N Common; ascending, rhizomatous shrub; 20-50 cm tall. Vegetative N RM0219614 N 335 RM 9316 Taylor, Amy 1998 RM 666236 RM0215610 Anacardiaceae Toxicodendron rydbergii (Small ex Rydb.) Greene RM-567 Amy J. Roderick 8095 12 8 1998 U.S.A. Wyoming Carbon Upper North Platte and Laramie River Drainages: Seminoe Mountains: Morgan and Marking Pen creeks on County Road 351, ca 2 air mi W of Seminoe Dam. Along creek; cottonwood and aspen common. 6900 ft. 42.1663° N, 106.9291° W T25N R84W S6 SW1/4 42.1663 -106.9291 Vegetative N RM0215610 N