| Documentation |
State |
Type |
| 1900. Memoirs of the New York Botanical Garden. |
MT |
Literature |
| 1975. Madroņo. |
UT |
Literature |
| 1978. Annals of the Missouri Botanical Garden. |
OR |
Literature |
| Beetle, A.A., and M. May. 1971. Grasses of Wyoming. University of Wyoming Agricultural Experiment Station Research Journal 39. Laramie. |
WY |
Literature |
| California Native Plant Society. Inventory of rare and endangered plants. |
CA |
Literature |
| Davis, R. 1952. Flora of Idaho. W.C. Brown Co., Dubuque. |
ID |
Literature |
| Hickman, J.C. (ed.). 1993. The Jepson manual. University of California Press, Berkeley. |
CA |
Literature |
| Hitchcock, A.S. 1950. Manual of the grasses of the United States, 2nd ed. USDA Miscellaneous Publication No. 200. |
WA |
Literature |
| IDS. Specimen at Idaho State University, Pocatello, Idaho. |
ID |
Specimen |
| Johnston, B. 1991. Vascular plants of Colorado. Unpublished. |
CO |
Literature |
| Threatened and endangered plants (1 October 2011). California Department of Fish and Game. |
|
Literature |
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