| Documentation |
State |
Type |
| 1996. Wassman Journal of Biology. |
CA |
Literature |
| 2000. CalFlora: Information on California plants for education, research and conservation. The CalFlora Database, Berkeley. |
CA |
Literature |
| Assorted authors. State noxious weed lists for 46 states. State agriculture or natural resource departments. |
|
Literature |
| California Department of Food and Agriculture. Pest ratings of noxious weed species and noxious weed seed (20 October 2003). California Department of Food and Agriculture, California. |
|
Literature |
| California Invasive Plant Council. California Invasive Plant Inventory. Cal-IPC Publication 2006-02 (1 February 2007). California Invasive Plant Council, Berkeley, California. |
|
Literature |
| Checklist of the vascular plants of San Diego County, California. San Diego Natural History Museum, San Diego. |
CA |
Literature |
| Clifton, G. Plumas County and Plumas National Forest flora (2001 Draft). Unpublished and undated. |
CA |
Literature |
| Division of Plant Industry. List of plant species designated as noxious weeds (20 October 2003). Hawaii Department of Agriculture, Hawaii. |
|
Literature |
| EOSC. Specimen at Eastern Oregon University, Lagrande, Oregon. |
OR |
Specimen |
| Hickman, J.C. (ed.). 1993. The Jepson manual. University of California Press, Berkeley. |
CA |
Literature |
| Hitchcock, C.L., A. Cronquist, M. Ownbey, and J.W. Thompson. 1969. Vascular plants of the Pacific Northwest. 5 vols. University of Washington Press, Seattle. |
WA |
Literature |
| Oregon Administrative Rules. Quarantine; noxious weeds, Chapter 603-52-1200 (24 May 2006). State of Oregon, Oregon. |
|
Literature |
| Oregon Department of Agriculture. Noxious weed policy and classification system (24 May 2006). Oregon Department of Agriculture, Oregon. |
|
Literature |
| Oregon Flora Project species list; species noted on herbarium specimens. Unpublished and undated. |
OR |
Literature |
| Peck, M.E. 1961. A manual of the higher plants of Oregon, 2nd ed. Oregon State University Press, Corvallis. |
OR |
Literature |
| SOC. Specimen at Southern Oregon University, Ashland, Oregon. |
OR |
Specimen |
| Specimen Management System for California Herbaria (SMASCH). |
CA |
Literature |
| Specimen at Douglas County Museum, Roseburg, Oregon. |
OR |
Specimen |
| Wilken, Dieter. Personal communication. |
CA |
Literature |
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