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RM RM 819700 Spirodela polyrrhiza physical specimen Araceae Spirodela polyrrhiza (L.) Schleid. 33770 Erwin F. Evert 1997 7 10 191 U.S.A. Idaho Fremont Island Park Plateau: Targhee National Forest: Warm River Campground, 8 mi NE of Ashton. 1585 In pond along north side of river. Phenology: flowering & fruiting. RM RM Spirodela polyrrhiza physical specimen Araceae Spirodela polyrrhiza (L.) Schleid. 9538 Grace M. Kostel 2005 8 6 218 U.S.A. Nebraska Sioux Oglala National Grassland and Vicinity: ca 12 air mi NW of Crawford in Little Cottonwood Creek. -103.506767 42.75395 1181 Perennial stream, soils are sand and loamy clay. Phenology: flowering. RM RM 264807 Spirodela polyrrhiza physical specimen Araceae Spirodela polyrrhiza (L.) Schleid. 8860 C. L. Porter Marjorie W. Porter 1961 8 19 231 U.S.A. Wyoming Teton Ca 1 mi SW of Moose. -110.7375 43.6543 1 1951 Ponds with Nuphar, abundant, floating on surface. With Lemna trisulca, L. turionifera Phenology: vegetative only. RM gtnp Spirodela polyrrhiza physical specimen Araceae Spirodela polyrrhiza (L.) Schleid. 508 C. W. Lahser, Jr. 1963 8 20 232 U.S.A. Wyoming Teton Grand Teton National Park: Moose Pond. -110.7351 43.6482 5 1951 Quiet open water in ponds and back waters. *copy. Phenology: vegetative only. RM RM 106807 Spirodela polyrrhiza physical specimen Araceae Spirodela polyrrhiza (L.) Schleid. s.n.c Ellsworth Bethel 1919 9 7 250 U.S.A. Wyoming Carbon Baggs. -107.6586 41.0405 2 1905 In ponds near the river. s.n.a Lemna trisulca and s.n.b L. minor on same sheet Phenology: vegetative only. RM RM 208819 Spirodela polyrrhiza physical specimen Araceae Spirodela polyrrhiza (L.) Schleid. 1193c John F. Reed 1947 8 11 223 U.S.A. Wyoming Teton Jackson Hole: near Moose. -110.7319 43.6564 1 1951 In small pond. 1193a Lemna minor and 1193b L. trisulca on same sheet Phenology: vegetative only. RM RM 908002 Spirodela polyrrhiza physical specimen Araceae Spirodela polyrrhiza (L.) Schleid. 2380 David Scott Amanda Richardson 2006 7 26 207 U.S.A. Wyoming Teton Grand Teton National Park and Vicinity: Jackson Hole: near Two Ocean Lake, ca 6 air mi N of Moran; ca 21.5 air mi NE of Moose. -110.4956 43.9257 2253 Pond with stagnant water and shallow areas dominated by Carex spp. Phenology: vegetative only. RM RM 908001 Spirodela polyrrhiza physical specimen Araceae Spirodela polyrrhiza (L.) Schleid. 3818 David Scott Tacheeni Scott 2007 6 22 173 U.S.A. Wyoming Teton Bridger-Teton National Forest: Teton Wilderness: near Gravel Creek, ca 13 air mi NE of Moran; ca 30 air mi NE of Moose. -110.3772 44.0022 2268 Floating in montane pond. Phenology: vegetative only. RM RM 908000 Spirodela polyrrhiza physical specimen Araceae Spirodela polyrrhiza (L.) Schleid. 4098 David Scott Tacheeni Scott 2007 6 28 179 U.S.A. Wyoming Teton Bridger-Teton National Forest: Teton Wilderness: near East Fork Pilgrim Creek, ca 8.5 air mi N of Moran; ca 23 air mi NNE of Moose. -110.5162 43.9586 2359 Floating aquatic on surface of montane lake. Phenology: vegetative only. RM RM 907998 Spirodela polyrrhiza physical specimen Araceae Spirodela polyrrhiza (L.) Schleid. 4412 David Scott Tacheeni Scott 2007 7 7 188 U.S.A. Wyoming Teton Bridger-Teton National Forest: Teton Wilderness: near head of Gravel Creek, ca 17 air mi NE of Moran; ca 33 air mi NE of Moose. -110.3668 44.0617 2536 Floating on surface of pond. Phenology: vegetative only. RM RM 718159 Spirodela polyrrhiza physical specimen Araceae Spirodela polyrrhiza (L.) Schleid. 9438 Robert D. Dorn 2002 7 28 209 U.S.A. Colorado Moffat Elkhead Mountains: ca 18 mi NE of Craig. -107.363333 40.751667 2804 Beaver pond. Phenology: vegetative only. RM Spirodela polyrrhiza physical specimen Araceae Spirodela polyrrhiza (L.) Schleid. 30854 Ronald L. Hartman Rafael Molina 1991 7 28 209 U.S.A. Idaho Teton Targhee National Forest: West Slope Teton Range: McRenolds Reservoir, ca 8 air mi E of Lamont. -111.0499 43.9625 1 2134 Openings adjacent to reservoir. RM Spirodela polyrrhiza physical specimen Araceae Spirodela polyrrhiza (L.) Schleid. 1975a James P. Vanderhorst 1990 8 27 239 U.S.A. Colorado Rio Blanco Flat Tops/White River Plateau: Sterry Lake, ca 16 air mi SE of Meeker. -107.6068 39.9206 2621 Muddy, shallow lake. RM Spirodela polyrrhiza physical specimen Araceae Spirodela polyrrhiza (L.) Schleid. 3102 Jean Wood 1995 8 8 220 U.S.A. Washington Stevens Western Colville National Forest and Vicinity: Little Pend Oreille Wildlife Refuge: McDowell Lake, ca 11 air mi SE of Colville along Rookery Road. -117.6815 48.4603 701 731 Lake edge and bottom; along source creek; Carex and alders. Phenology: vegetative only. RM Spirodela polyrrhiza physical specimen Araceae Spirodela polyrrhiza (L.) Schleid. 7383b Jean Wood Madilane Perry 1996 8 10 223 U.S.A. Washington Ferry Western Colville National Forest and Vicinity: Curlew Lake, ca 4 air mi NNE of Republic. -118.6684 48.7072 731 Lake and shoreline. Phenology: vegetative only. RM RM Spirodela polyrrhiza physical specimen Araceae Spirodela polyrrhiza (L.) Schleid. 14741 B. E. Nelson Neil Snow 1987 8 8 220 U.S.A. Wyoming Teton Southwestern Absarokas: Gravel Lake, ca 7 air mi S of Yellowstone National Park, ca 42.3 air mi NNE of Jackson. -110.3642 44.0242 2439 In the lake. RM RM 130608 Spirodela polyrrhiza physical specimen Araceae Spirodela polyrrhiza (L.) Schleid. 2107 J. E. Kirkwood 1925 7 19 200 U.S.A. Montana Seeley Lake. West side of slough. Phenology: vegetative only. RM RM 111536 Spirodela polyrrhiza physical specimen Araceae Spirodela polyrrhiza (L.) Schleid. 2107 J. E. Kirkwood 1925 7 19 200 U.S.A. Montana Seeley Lake. West side of slough. Phenology: vegetative only. RM RM 907999 Spirodela polyrrhiza physical specimen Araceae Spirodela polyrrhiza (L.) Schleid. 2380 David Scott Amanda Richardson 2006 7 26 207 U.S.A. Wyoming Teton Grand Teton National Park and Vicinity: Jackson Hole: near Two Ocean Lake, ca 6 air mi N of Moran; ca 21.5 air mi NE of Moose. -110.4956 43.9257 2253 Pond with stagnant water and shallow areas dominated by Carex spp. Phenology: vegetative only. RM RM 909808 Spirodela polyrrhiza physical specimen Araceae Spirodela polyrrhiza (L.) Schleid. 3753 Bonnie Heidel 2012 8 11 224 U.S.A. Wyoming Lincoln Wyoming Range: 0.5 mi SE of Little Greys River mouth, ca 8 mi E of Alpine. 2085 Small pool in a midslope trough, partial shade, on silt-textured parent material, with fallen logs and little emergent vegetation, with Pseudotsuga menziesii, Alopecurus aequalis, and Glyceria spp. Phenology: vegetative only. RM RM 29419 Spirodela polyrrhiza physical specimen Araceae Spirodela polyrrhiza (L.) Schleid. 282 O. A. Stevens 1937 8 17 229 U.S.A. North Dakota Cass Fargo, on Red River. Phenology: vegetative only. RM RM 29419 Spirodela polyrrhiza physical specimen Araceae Spirodela polyrrhiza (L.) Schleid. 232 C. A. Stevens 1937 8 17 229 U.S.A. North Dakota Cass Fargo on the Red River. Phenology: vegetative only. 3600 3,1,0 true