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 141396 Evert 1991 RM 739045 Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. RM-15916 Erwin F. Evert 21666 9 7 1991 U.S.A. Montana Park Yellowstone Valley: south shore of Dailey Lake, ca 15 mi N of Gardiner. Lakeshore with Distichlis stricta, Festuca arundinacea, Spartina gracilis, and Scirpus nevadensis. 5241 ft. 45.2556° N, 110.8074° W T7S R7E S1 45.2556 -110.8074 Flowering and Fruiting N N 2 RM 184174 Welp 1994 687842 RM0320043 Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. RM-17469 Laura Welp 1256 26 6 1994 U.S.A. Wyoming Carbon [location and coordinates withheld] Low slopes adjacent to spring, in slightly rolling terrain; low rabbitbrush and sagebrush dominant; dry, sandy, soil. 6650 6700 ft. Flowering and Fruiting N RM0320043 N 3 RM 186135 Welp 1994 RM 687843 RM0145984 Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. RM-17555 Laura Welp 2969 26 7 1994 U.S.A. Wyoming Fremont Great Divide Basin Area: Sweetwater River Drainage: dry stream ca 1.5 air mi E of Picket Lake; ca 10 air mi N of Bastard Butte. Small dry spring along stream; grazed graminoids dominant; dry soil. 7000 ft. 42.27° N, 108.4283° W T27N R97W S32 42.27 -108.4283 Fruiting N RM0145984 N 4 RM 187201 Welp 1994 RM 687844 RM0145983 Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. RM-17621 Laura Welp 513 16 6 1994 U.S.A. Wyoming Sweetwater Great Divide Basin Area: Great Divide Basin: Circle Bar Lake, ca 21 air mi N of Wamsutter; ca 4.5 air mi NE of Government Reservoir. Shore of large (3/4 mi diameter), shallow lake in wide basin; scattered Atriplex shrubs and Distichlis dominant; dry sandy soil. 6480 6490 ft. 41° 59' 59" N, 107° 57' 22" W T23N R93W S6 41.999722 -107.956111 Flowering and Fruiting N RM0145983 N 5 RM 190537 Welp 1995 Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. RM-17736 Laura Welp 6555 21 7 1995 U.S.A. Wyoming Carbon Great Divide Basin Area: Great Divide Basin: Boggy Meadows, ca 4 air mi E of Separation Point; ca 6 air mi W of Rendle Spring. Side of lake in basin; dry, alkaline soil. 6490 6520 ft. 42.0803° N, 107.3581° W T24N R88W S5 NW1/4; also N1/2 S6 42.0803 -107.3581 Flowering N N 6 RM 199266 Heidel 2005 RM 789332 RM0145986 Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. RM-18244 Bonnie Heidel 2718 12 6 2005 U.S.A. Wyoming Carbon Great Divide Basin: Ferris Dunes, ca 1.5 air mi NE of Ferris. Abundant and local dominant in upland swale on moist sand, no associated species; partially buried in sand. 6940 ft. T26N R86W S19 Flowering and Fruiting N RM0145986 N 7 RM 3410 Taylor, Amy 1997 RM 957276 RM0209512 Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. RM-349 Amy J. Roderick 2791 28 7 1997 U.S.A. Wyoming Natrona Upper North Platte and Laramie River Drainages: Jackson Lake N of Wyo Hwy 220, ca 8.6 air mi NE of Three Forks Junction. Dry saline lake shores dominated by graminoids and bordered by sagebrush and greasewood. 6030 ft. 42.4383° N, 107.3372° W T29N R88W S35 SW1/4 42.4383 -107.3372 Fruiting N RM0209512 N 8 RM 341625 Porter RM 268368 RM0145982 Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. RM-32580 C. L. Porter 9192 Marjorie W. Porter 7 8 1962 U.S.A. Wyoming Albany Twin Buttes Reservior, ca 25 mi SW of Laramie Common, on the plains, at edge of lake in shallow water; alkaline area. 7400 ft. 41.2358° N, 105.8526° W; NAD 83, uncertainty 1 mi., Digital Map T15N R75W S30 41.2358 -105.8526 NAD 83 1 mi. Digital Map Located ca 16 road miles SW of Laramie, on the SE side of Twin Buttes Lake; ca 0.75 miles west of Gelatt Lake; ca 0.75 miles NW of Phillips Reservoir; ca 1.25 air miles SE of Twin Buttes rock; geo-locate.org. EL Fruiting N RM0145982 N 9 RM 362308 RMHERB1 RM 779263 RM0145990 Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. RM-37248 Bonnie Heidel 2603 4 7 2004 U.S.A. Wyoming Uinta Green River Basin: ca 3 mi W of Carter, on north side of Muddy Creek banks. Local dominant on banks on creek, below Distichilis stricta zone, with Glaux maritima, Hordeum brachyantherum, and Salicornia rubra. 6520 ft. T17N R116W S26 NE1/4 Flowering and Fruiting N RM0145990 N 10 RM 366114 RMHERB1 RM 12575 RM0145995 Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. RM-40034 Elias Nelson 4987 27 7 1898 U.S.A. Wyoming Natrona Sweetwater River. 5900 ft. 42.5112° N, 107.0619° W; uncertainty 3 mi. T29N R85W S6 42.5112 -107.0619 3 mi. Fruiting N RM0145995 N 11 RM 386595 RMHERB1 RM 391359 RM0145989 Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. RM-49911 Robert J. Hill 1512 Dennis Knight 8 6 1974 U.S.A. Wyoming Sweetwater Great Divide Basin and Adjacent Regions: Red Desert: Chain of Lakes Wildlife Area. Growing in the saline mud flats in wet areas. 7000 ft. 41.9659° N, 107.8449° W; uncertainty 1 mi. T23N R92W S18 41.9659 -107.8449 1 mi. N N Flowering and Fruiting N RM0145989 N 12 RM 3891 Taylor, Amy 1997 RM 957275 RM0209511 Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. RM-368 Amy J. Roderick 3222 4 8 1997 U.S.A. Wyoming Carbon Upper North Platte and Laramie River Drainages: Saratoga Lake E of Wyo Hwy 130, ca 1.2 air mi ENE of Saratoga; ca 18 air mi N of Encampment. Wetlands and disturbed gravelly area surrounding lake. 6775 ft. 41.4758° N, 106.7934° W; uncertainty 1 mi. T17N R84W S1 S1/2 41.4758 -106.7934 1 mi. Flowering and Fruiting N RM0209511 N 13 RM 401126 WYNDD RM 683954 Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. RM-19272 Walter Fertig 18432 20 7 1998 U.S.A. Wyoming Albany Laramie Basin: plain on south side of Spring Creek immediately north of I-80 at U.S. Hwy 287 exit, on south side of Laramie. Clay flats dominated by Sarcobatus vermiculatus on gray heavy alkali soil with understory of Cardaria, Descurainia sophia, Distichlis spicata. 7200 ft. 41.2967° N, 105.5842° W; uncertainty 0.25 mi. T15N R73W S4 NE1/4 of SW1/4 41.2967 -105.5842 0 mi. Fruiting N N 14 RM 401429 WYNDD RM 683954 RM0145988 Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. RM-59782 Walter Fertig 18839 21 7 1999 U.S.A. Wyoming Albany Laramie Basin: flats S of Spring Creek and N of I-80 at 3rd Street exit in Laramie. White alkali playa in community of Scirpus maritimus, S. nevadensis, and Distichlis stricta; soil seasonally flooded, fine-textured clay; vegetative cover ca 30%. 7200 ft. 41.2967° N, 105.5842° W; uncertainty 0.25 mi. T15N R73W S4 SE1/4 NW1/4 41.2967 -105.5842 0 mi. Fruiting N RM0145988 N 15 RM 401435 WYNDD RM 645418 RM0145993 Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. RM-59836 Walter Fertig 18847 Mary Neigbours 27 7 1999 U.S.A. Wyoming Natrona Sweetwater River Plateau: west shore of Steamboat Lake, ca 0.3 air mi S of Wyo Hwy 220; ca 4.5 mi NNE of Independence Rock. Low, alkali clay rims at edge of wetland in community of Distichlis spicata, Sporobolus airoides, and Scirpus nevadensis. 5860 ft. 42.5401° N, 107.0796° W; uncertainty 0.25 mi. T30N R86W S25 NW1/4 of SW1/4 of NE1/4 42.5401 -107.0796 0 mi. Fruiting N RM0145993 N 16 RM 401478 WYNDD RM 681238 RM0145985 Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. RM-19294 Walter Fertig 18906 Laura Welp 15 8 1999 U.S.A. Wyoming Albany Laramie Basin: south shore of Meeboer Lake, ca 1.2 mi NW of Wyo Hwy 230; ca 4.2 mi E of east end of Lake Hattie; ca 12 air mi SW of Laramie. Moist, slightly alkaline soil in community of Scirpus pungens-Juncus balticus along shore of lake, bordered by moist low spots dominated by Carex simulata. 7250 ft. 41.2105° N, 105.8135° W; uncertainty 0.25 mi. T14N R75W S4 SE1/4 of SW1/4 of NW1/4 41.2105 -105.8135 0 mi. Fruiting N RM0145985 N 17 RM 401528 WYNDD RM 682446 RM0145994 Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. RM-19301 Walter Fertig 18987 28 8 1999 U.S.A. Wyoming Natrona Sweetwater River Plateau: Jackson Lake, ca 1-1.5 mi S of the Sweetwater River, ca 2 mi N of Wyo Hwy 220, ca 6 mi W of Devils Gate. Scirpus nevadensis-Distichlis spicata community on moist but not flooded alkali-clay soils near banks of lake (on upslope side of denser Scirpus pungens communities). 6040 ft. 42.4382° N, 107.3351° W; uncertainty 0.5 mi. T29N R88W S35 SW1/4 42.4382 -107.3351 1 mi. Fruiting N RM0145994 N 18 RM 401638 WYNDD RM 683878 RM0145992 Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. RM-19306 Walter Fertig 19173 15 7 2000 U.S.A. Wyoming Sweetwater Green River Basin: sand dune complex ca 3 air mi NW of the Boars Tusk; 9 air mi E of U.S. Hwy 191; ca 11 air mi SE of Farson. Mesic bottom of sand dune valley in ephemeral wetland site (currently dry) domianted by Scirpus pungens, Carex lanuginosa, Hordeum jubatum, and Juncus balticus; soil sandy, moist below surface. 6840 ft. 41.9268° N, 109.2353° W; uncertainty 0.25 mi. T23N R104W S31 South1/2 of SW1/4 of SW1/4 41.9268 -109.2353 0 mi. Fruiting N RM0145992 N 19 RM 401688 WYNDD RM 682255 RM0145991 Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. RM-59916 Walter Fertig 19250 22 8 2000 U.S.A. Wyoming Natrona Sweetwater River Valley: playa lakes ca 1.2-1.6 air mi Wof Sanford Peak; ca 0.7 mi ESE of Steamboat Lake; ca 1 mi N of Pathfinder Reservoir (at high water); ca 1.3 mi Sof Wyo Hwy 220. South shore of dry alkali lake on alkaline clay soil; community of Distichlis stricta and scattered Spartina on lakeshore with vegetative cover 15-25%. 5860 ft. 42.5401° N, 107.0403° W; uncertainty 0.5 mi. T30N R85W S29 South1/2 of SW1/4 42.5401 -107.0403 1 mi. Fruiting N RM0145991 N 20 RM 535180 Ward 1996 RM 792387 Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. RM-102803 Beth Ward 1279 23 6 1996 U.S.A. Wyoming Sweetwater South-central Wyoming: Rock Springs Uplift: spring and creek S of and adjacent to sand dunes located ca 1-2 air mi SW of Steamboat Rim, ca 25.5 air mi NNE of Rock Springs. Near water table. 6900 7160 ft. T23N R103W S22 N1/2; also South1/4 S15 Fruiting N N 21 RM 535201 Ward 1996 RM 792387 RM0100499 Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. RM-102803 Beth Ward 1297 23 6 1996 U.S.A. Wyoming Sweetwater South-central Wyoming: Rock Springs Uplift: spring and creek S of and adjacent to sand dunes located ca 1-2 air mi SW of Steamboat Rim, ca 25.5 air mi NNE of Rock Springs. Near water table. 6900 7160 ft. T23N R103W S22 N1/2; also South1/4 S15 Flowering and Fruiting N RM0100499 N 22 RM 644441 SE WY 1994 RM 704944 RM0145987 Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. RM-108548 B. E. Nelson 33486 Tim Chumley and Robbin Romberg 4 8 1994 U.S.A. Wyoming Goshen Southern Powder River Basin/Southeastern Plains: Goshen Hole: Sinnard Reservoir and vicinity, ca 4.5 air mi WNW of Hawk Springs; ca 19 air mi SSW of Torrington. Marshy channel below the dam and wet meadows. 4350 4390 ft. 41.8077° N, 104.3478° W; NAD 83, uncertainty 700 ft., Nat. Geog. TOPO! T21N R62W S7 NE1/4 41.8077 -104.3478 NAD 83 700 ft. N N Nat. Geog. TOPO! BEN Flowering and Fruiting N RM0145987 N 23 RM 650600 Cramer 1994 RM 629275 RM0145996 Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. RM-109436 Ronald L. Hartman 48679 29 7 1994 U.S.A. Wyoming Sweetwater Green River Basin: lake 0.5 air mi S of Eden Reservoir, ca 8 air mi NE of Farson. Lake margin. 6700 ft. 42.215° N, 109.3761° W; uncertainty 1 mi. T26N R105W S19 South1/2 42.215 -109.3761 1 mi. Fruiting N RM0145996 N 24 RM 729159 Lukas BLM RM 919223 RM0078648 Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. RM-117484 Laura E. Lukas 8673 Bonnie Heidel, Richard McNeill, Benjamin S. Legler 31 8 2008 U.S.A. Wyoming Albany Laramie Plains: just E of Sheep Mountain, ca 2 air mi N of Lake Hattie, ca 9 air mi ESE of Centennial. Seep on plains, salty, sandy clay soil. 7380 7400 ft. 41.2598° N, 105.9865° W to 41.2589° N, 105.983° W; NAD 83, uncertainty 0.25 mi., GPS reading zone 13T, 417369E, 4568063N to 417656E, 4567957N; NAD 83, uncertainty 0.25 mi., GPS reading T15N R77W S24 N1/2 41.2598 -105.9865 NAD 83 0 mi. GPS reading Flowering and Fruiting RM0078648 25 RM 741737 Missouri Plateau RM 366733 Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. RM-123326 Peter Lesica 3586 28 7 1985 U.S.A. Montana Lincoln Shore at west end of Rock Lake. In wet, stoney clay soil; with Juncus balticus and Scirpus americanus. 2900 ft. T35N R26W S6 Common. Flowering and Fruiting N N 26 RM 741916 Missouri Plateau RM 179516 Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. RM-123406 O. A. Stevens 436 16 7 1939 U.S.A. North Dakota Pierce Lake Esmond. Sandy shore of alkaline Lake. Flowering and Fruiting N N 27 RM 741917 Missouri Plateau RM 189446 Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. RM-123406 O. A. Stevens 436 16 7 1939 U.S.A. North Dakota Pierce Lake Esmond. Sandy shore of alkaline Lake. Flowering and Fruiting N N 28 RM 776521 Heidel 2008 RM 841773 RM0048084 Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. RM-132925 Bonnie Heidel 3180 23 7 2008 U.S.A. Wyoming Sweetwater Great Divide Basin: Mud Springs, ca 4 air mi NE of Bush Lake, ca 23 air mi NW of Rawlins. Shore of alkali lake, wet silt, with Puccinellia nuttallii, Triglochin martima. 6440 ft. T14N R95W S26 NW1/4 Flowering N RM0048084 N 29 RM 794904 RMHERB1 RM 840759 Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. RM-135509 Bethany Lewis 617b 20 8 2007 U.S.A. Wyoming Albany Laramie Plains: Mortenson Lake National Wildlife Refuge, ca 11 air miles SW of Laramie. Greasewood/grassland uplands. 7280 ft. 41° 13.141' N, 105° 49.68' W; WGS 84, , GPS reading T43N R11E 41.219017 -105.828 WGS 84 GPS reading Flowering N N 30 RM 832971 Heidel 2011 RM 909189 RM0145981 Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. RM-148603 Bonnie Heidel 3553 14 7 2011 U.S.A. Wyoming Sweetwater Green River Basin: W of Killpecker Dunes, ca 6 air mi NNW of the Boars Tusk, ca 11.5 air mi ESE of Farson. Sandplain swale complex, with Spartina gracilis, Juncus balticus. 6820 ft. T24N R105W S24 NE1/4 NE1/4 Fruiting N RM0145981 31 RM 919842 Heidel 2018 RM 981972 RM0251845 Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. RM-455753 Bonnie Heidel 4645 25 6 2018 U.S.A. Wyoming Sweetwater Great Divide Basin Area: Oregon Buttes Wilderness Study Area: ca 1.2 air mi ENE of Oregon Butte summit, ca 14.5 air mi S of South Pass City. Spring in hillslope alkaline meadow; with Juncus balticus, Triglochin palustre, Spartina gracilis. 7560 ft. 42.2606° N, 108.8326° W; WGS 84, , GPS reading T26N R101W S2 NE1/4 NE1/4 42.2606 -108.8326 WGS 84 N N GPS reading Flowering N RM0251845 N 32 RM 9723 Taylor, Amy 1998 RM Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. RM-590 Amy J. Roderick 8461 18 8 1998 U.S.A. Wyoming Natrona Upper North Platte and Laramie River Drainages: Steamboat Lake S of Wyo Hwy 220, ca 19 air mi W of Alcova townsite. Alkaline flats near lake. 5860 ft. 42.5403° N, 107.0816° W T30N R86W S25 42.5403 -107.0816 Fruiting N N