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RM RM 739045 Amphiscirpus nevadensis physical specimen Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. 21666 Erwin F. Evert 1991 7 9 190 U.S.A. Montana Park Yellowstone Valley: south shore of Dailey Lake, ca 15 mi N of Gardiner. -110.8074 45.2556 1597 Lakeshore with Distichlis stricta, Festuca arundinacea, Spartina gracilis, and Scirpus nevadensis. Phenology: flowering & fruiting. RM 687842 Amphiscirpus nevadensis physical specimen Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. 1256 Laura Welp 1994 6 26 177 U.S.A. Wyoming Carbon [location and coordinates withheld] 2027 2042 Low slopes adjacent to spring, in slightly rolling terrain; low rabbitbrush and sagebrush dominant; dry, sandy, soil. Phenology: flowering & fruiting. RM RM 687843 Amphiscirpus nevadensis physical specimen Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. 2969 Laura Welp 1994 7 26 207 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. -108.4283 42.27 2134 Small dry spring along stream; grazed graminoids dominant; dry soil. Phenology: fruiting. RM RM 687844 Amphiscirpus nevadensis physical specimen Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. 513 Laura Welp 1994 6 16 167 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. -107.956111 41.999722 1975 1978 Shore of large (3/4 mi diameter), shallow lake in wide basin; scattered Atriplex shrubs and Distichlis dominant; dry sandy soil. Phenology: flowering & fruiting. RM Amphiscirpus nevadensis physical specimen Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. 6555 Laura Welp 1995 7 21 202 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. -107.3581 42.0803 1978 1987 Side of lake in basin; dry, alkaline soil. Phenology: flowering. RM RM 789332 Amphiscirpus nevadensis physical specimen Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. 2718 Bonnie Heidel 2005 6 12 163 U.S.A. Wyoming Carbon Great Divide Basin: Ferris Dunes, ca 1.5 air mi NE of Ferris. 2115 Abundant and local dominant in upland swale on moist sand, no associated species; partially buried in sand. Phenology: flowering & fruiting. RM RM 957276 Amphiscirpus nevadensis physical specimen Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. 2791 Amy J. Roderick 1997 7 28 209 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. -107.3372 42.4383 1838 Dry saline lake shores dominated by graminoids and bordered by sagebrush and greasewood. Phenology: fruiting. RM RM 268368 Amphiscirpus nevadensis physical specimen Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. 9192 C. L. Porter Marjorie W. Porter 1962 8 7 219 U.S.A. Wyoming Albany Twin Buttes Reservior, ca 25 mi SW of Laramie -105.8526 41.2358 1 2256 Common, on the plains, at edge of lake in shallow water; alkaline area. Phenology: fruiting. RM RM 779263 Amphiscirpus nevadensis physical specimen Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. 2603 Bonnie Heidel 2004 7 4 186 U.S.A. Wyoming Uinta Green River Basin: ca 3 mi W of Carter, on north side of Muddy Creek banks. 1987 Local dominant on banks on creek, below Distichilis stricta zone, with Glaux maritima, Hordeum brachyantherum, and Salicornia rubra. Phenology: flowering & fruiting. RM RM 12575 Amphiscirpus nevadensis physical specimen Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. 4987 Elias Nelson 1898 7 27 208 U.S.A. Wyoming Natrona Sweetwater River. -107.0619 42.5112 3 1798 Phenology: fruiting. RM RM 391359 Amphiscirpus nevadensis physical specimen Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. 1512 Robert J. Hill Dennis Knight 1974 6 8 159 U.S.A. Wyoming Sweetwater Great Divide Basin and Adjacent Regions: Red Desert: Chain of Lakes Wildlife Area. -107.8449 41.9659 1 2134 Growing in the saline mud flats in wet areas. Phenology: flowering & fruiting. RM RM 957275 Amphiscirpus nevadensis physical specimen Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. 3222 Amy J. Roderick 1997 8 4 216 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. -106.7934 41.4758 1 2065 Wetlands and disturbed gravelly area surrounding lake. Phenology: flowering & fruiting. RM RM 683954 Amphiscirpus nevadensis physical specimen Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. 18432 Walter Fertig 1998 7 20 201 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. -105.5842 41.2967 2195 Clay flats dominated by Sarcobatus vermiculatus on gray heavy alkali soil with understory of Cardaria, Descurainia sophia, Distichlis spicata. Phenology: fruiting. RM RM 683954 Amphiscirpus nevadensis physical specimen Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. 18839 Walter Fertig 1999 7 21 202 U.S.A. Wyoming Albany Laramie Basin: flats S of Spring Creek and N of I-80 at 3rd Street exit in Laramie. -105.5842 41.2967 2195 White alkali playa in community of Scirpus maritimus, S. nevadensis, and Distichlis stricta; soil seasonally flooded, fine-textured clay; vegetative cover ca 30%. Phenology: fruiting. RM RM 645418 Amphiscirpus nevadensis physical specimen Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. 18847 Walter Fertig Mary Neigbours 1999 7 27 208 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. -107.0796 42.5401 1786 Low, alkali clay rims at edge of wetland in community of Distichlis spicata, Sporobolus airoides, and Scirpus nevadensis. Phenology: fruiting. RM RM 681238 Amphiscirpus nevadensis physical specimen Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. 18906 Walter Fertig Laura Welp 1999 8 15 227 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. -105.8135 41.2105 2210 Moist, slightly alkaline soil in community of Scirpus pungens-Juncus balticus along shore of lake, bordered by moist low spots dominated by Carex simulata. Phenology: fruiting. RM RM 682446 Amphiscirpus nevadensis physical specimen Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. 18987 Walter Fertig 1999 8 28 240 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. -107.3351 42.4382 1 1841 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). Phenology: fruiting. RM RM 683878 Amphiscirpus nevadensis physical specimen Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. 19173 Walter Fertig 2000 7 15 197 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. -109.2353 41.9268 2085 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. Phenology: fruiting. RM RM 682255 Amphiscirpus nevadensis physical specimen Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. 19250 Walter Fertig 2000 8 22 235 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. -107.0403 42.5401 1 1786 South shore of dry alkali lake on alkaline clay soil; community of Distichlis stricta and scattered Spartina on lakeshore with vegetative cover 15-25%. Phenology: fruiting. RM RM 792387 Amphiscirpus nevadensis physical specimen Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. 1279 Beth Ward 1996 6 23 175 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. 2103 2182 Near water table. Phenology: fruiting. RM RM 792387 Amphiscirpus nevadensis physical specimen Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. 1297 Beth Ward 1996 6 23 175 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. 2103 2182 Near water table. Phenology: flowering & fruiting. RM RM 704944 Amphiscirpus nevadensis physical specimen Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. 33486 B. E. Nelson Tim Chumley and Robbin Romberg 1994 8 4 216 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. -104.3478 41.8077 700 1326 1338 Marshy channel below the dam and wet meadows. Phenology: flowering & fruiting. RM RM 629275 Amphiscirpus nevadensis physical specimen Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. 48679 Ronald L. Hartman 1994 7 29 210 U.S.A. Wyoming Sweetwater Green River Basin: lake 0.5 air mi S of Eden Reservoir, ca 8 air mi NE of Farson. -109.3761 42.215 1 2042 Lake margin. Phenology: fruiting. RM RM 919223 Amphiscirpus nevadensis physical specimen Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. 8673 Laura E. Lukas Bonnie Heidel, Richard McNeill, Benjamin S. Legler 2008 8 31 244 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. -105.9865 41.2598 2250 2256 Seep on plains, salty, sandy clay soil. Phenology: flowering & fruiting. RM RM 366733 Amphiscirpus nevadensis physical specimen Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. 3586 Peter Lesica 1985 7 28 209 U.S.A. Montana Lincoln Shore at west end of Rock Lake. 884 In wet, stoney clay soil; with Juncus balticus and Scirpus americanus. Common. Phenology: flowering & fruiting. RM RM 179516 Amphiscirpus nevadensis physical specimen Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. 436 O. A. Stevens 1939 7 16 197 U.S.A. North Dakota Pierce Lake Esmond. Sandy shore of alkaline Lake. Phenology: flowering & fruiting. RM RM 189446 Amphiscirpus nevadensis physical specimen Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. 436 O. A. Stevens 1939 7 16 197 U.S.A. North Dakota Pierce Lake Esmond. Sandy shore of alkaline Lake. Phenology: flowering & fruiting. RM RM 841773 Amphiscirpus nevadensis physical specimen Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. 3180 Bonnie Heidel 2008 7 23 205 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. 1963 Shore of alkali lake, wet silt, with Puccinellia nuttallii, Triglochin martima. Phenology: flowering. RM RM 840759 Amphiscirpus nevadensis physical specimen Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. 617b Bethany Lewis 2007 8 20 232 U.S.A. Wyoming Albany Laramie Plains: Mortenson Lake National Wildlife Refuge, ca 11 air miles SW of Laramie. -105.828 41.219017 2219 Greasewood/grassland uplands. Phenology: flowering. RM RM 909189 Amphiscirpus nevadensis physical specimen Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. 3553 Bonnie Heidel 2011 7 14 195 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. 2079 Sandplain swale complex, with Spartina gracilis, Juncus balticus. Phenology: fruiting. RM RM 981972 Amphiscirpus nevadensis physical specimen Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. 4645 Bonnie Heidel 2018 6 25 176 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. -108.8326 42.2606 2304 Spring in hillslope alkaline meadow; with Juncus balticus, Triglochin palustre, Spartina gracilis. Phenology: flowering. RM RM Amphiscirpus nevadensis physical specimen Cyperaceae Amphiscirpus nevadensis (S. Watson) Oteng-Yeb. 8461 Amy J. Roderick 1998 8 18 230 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. -107.0816 42.5403 1786 Alkaline flats near lake. Phenology: fruiting. 3600 3,1,0 true