| Documentation |
State |
Type |
| Hickman, J.C. (ed.). 1993. The Jepson manual. University of California Press, Berkeley. |
CA |
Literature |
| Hrusa, G.F. 1996. Private checklist on file at UC Davis Herbarium. Unpublished. |
CA |
Literature |
| Kartesz, J.T. 1988. A flora of Nevada. Ph.D. Dissertation. University of Nevada, Reno. |
NV |
Literature |
| Kartesz, J.T. 2001. Atlas of the Nevada flora. Unpublished. |
NV |
Literature |
| Kartesz, J.T. 2002. Atlas of the Arizona flora. Unpublished. |
AZ |
Literature |
| Lehr, J.H. 1978. A catalogue of the flora of Arizona. Desert Botanical Garden, Phoenix. |
AZ |
Literature |
| Nevada Natural Heritage Program. 2001. Christmas trees, cacti, and yucca native to Nevada (20 October 2002). Department of Conservation and Natural Resources, Nevada. |
|
Literature |
| Nevada Natural Heritage Program. 2001. State of Nevada list of fully protected plant species (20 October 2002). Department of Conservation and Natural Resources, Nevada. |
|
Literature |
| Specimen Management System for California Herbaria (SMASCH). |
CA |
Literature |