ATTACHMENT SS2

REGION 2 SENSITIVE SPECIES EVALUATION FORM

Species: Alisma gramineum Lej. / narrow-leaf water-plantain / ALGR (Scientific Name/Common Name/National Code for Plants – USDA PLANTS) Criteria Rank Rationale Literature Citations 1 BC Apparently localized but throughout the northern portion of R-2. Not in the Black Hills • Larson 1993, Marriott 1986, but throughout wSD, ncent Neb, scattered across WY & reported for San Luis Valley & RM 2001, GPFA 1977, GPFA Distribution within R2 Boulder Co., CO. 1986, Weber & Wittmann 2001.

Confidence in Rank Medium Circumboreal. In North America - across s Canada from Ont. to B.C., south in US to • FNA 2000, Correll & Correll 2 C VT, NY, MN, NE, CO, nUT, nNV, nCA, also local in AZ & NM. Distribution 1972. outside R2 Confidence in Rank High As with other Alismataceae, waterfowl and shorebirds probably disperse the seeds. • Fassett 1957. 3 B Dispersal Capability Confidence in Rank Medium While localized, it is throughout R2 and probably locally abundant in suitable habitat. • 4 BC Why it it localized is not known - habitat specificity vs dispersal? Abundance in R2 Confidence in Rank Medium Not known whether population is expanding, contracting or stable. • 5 D Population Trend in R2 Confidence in Rank Medium

Without knowing how habitat specific this plant is, it is difficult to say much about the • 6 D habitat trend. Does this species colonized wetland habitats of stock dams(? ) which Habitat Trend in R2 have been created throughout the western Great Plains, including on the National Grasslands. Confidence in Rank Low Hard to say without knowing habitat specificity. • 7 D Habitat Vulnerability or Modification Confidence in Rank Low

USDA-Forest Service R2 Sensitive Species Evaluation Form Page 1 of 3 ATTACHMENT SS2

Species: Alisma gramineum Lej. / narrow-leaf water-plantain / ALGR (Scientific Name/Common Name/National Code for Plants – USDA PLANTS) Criteria Rank Rationale Literature Citations Wetland plant species which have to colonize distant, isolated habitats often have high • 8 D seed mortality but they tend to produce abundant seeds. Waterfowl dispersal of the Life History and seeds provides some likelihood that the seeds will reach another wetland. Demographics Confidence in Rank Medium Evaluator(s): David J. Ode Date: 24 September, 2001

National Forests in the Rocky Mountain Region where species is KNOWN (K) or LIKELY (L)1 to occur:

Species Name: Alisma gramineum Formatted Colorado NF/NG Kansas NF/NG Nebraska NF/NG South Dakota Wyoming NF/NG

NF/NG

y y

y y y Likel Known Known Likel Known Known Likel Known Likel Known Likel Arapaho-Roosevelt NF ? Cimarron NG Samuel R.McKelvie NF ? Black Hills NF Shoshone NF White River NF Halsey NF Buffalo Gap NG X Bighorn NF Routt NF Nebraska NF ? Ft. Pierre NG X Black Hills NF Grand Mesa, Ogalala NG X Medicine Bow NF Uncompahgre, Gunnison NF San Juan NF Thunder Basin NG X Rio Grande NF Pike-San Isabel NF Comanche NG Pawnee NG

Sources Cited

1 Likely is defined as more likely to occur than not occur on the National Forest or Grassland. This generally can be thought of as having a 50% chance or greater of appearing on NFS lands.

USDA-Forest Service R2 Sensitive Species Evaluation Form Page 2 of 3 ATTACHMENT SS2 Correll, Donovan S. and Helen B. Correll. 1972. Aquatic and Wetland Plants of the Southwestern United States. Environmental Protection Agency, U.S. Government Printing Office, Washington, DC.

Fassett, Norman C. 1957. A Manual of Aquatic Plants. University of Wisconsin Press, Madison, WI.

Flora of North America Association, eds. (FNA). 2000. Flora of North America north of Mexico. Volume 22, Magnoliophyta: Alismatidae, Arecidae, Commelinidae (in part), and Zingiberidae. Oxford University Press, New York, NY.

Great Plains Flora Association (GPFA). 1977. Atlas of the Flora of the Great Plains. Iowa State University Press, Ames, IA.

Great Plains Flora Association (GPFA). 1986. Flora of the Great Plains. University Press of Kansas. Lawrence, KS.

Marriott, Hollis. 1986. Checklist of vascular plants of the northwestern Black Hills, Crook and Weston Counties, WY. Rocky Mountain Herbarium, University of Wyoming, Laramie, WY.

Rocky Mountain Herbarium (RM). 2001. Atlas of Vascular Plants of Wyoming. Web site: http://www.esb.utexas.edu/tchumley/wyomap/atlas.htm. University of Wyoming, Laramie, WY; accessed Sept. 2001.

Weber, William. A. and Ronald. C. Wittmann. 2001. Colorado Flora: Eastern Slope. Third Edition. University Press of Colorado, Boulder, CO.

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