Abstract
Revised treatments for Sidalcea for the upcoming Second Edition of the Jepson Manual and the Flora of North America have led to the discovery of several additional taxa. Sidalcea hickmanii subsp. napensis and subsp. pillsburiensis are described as new from north- ern California. As with the other four described subspecies, the two new taxa are found in very small isolated populations in upland areas of open chaparral vegetation, the former from Napa County, and the latter from Lake County. They may represent relict popula- tions. Unlike most other populations of the species, the two new taxa are not necessarily associated with serpentine. The two new subspecies, and the others, may be vulnerable to grazing, foraging and human-caused changes in their environments.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 783-791 |
| Number of pages | 9 |
| Journal | Journal of the Botanical Research Institute of Texas |
| Volume | 2 |
| Issue number | 2 |
| State | Published - Dec 9 2008 |
Keywords
- INHS
- Malvaceae
- Sidalcea hickmanii
- California
- North America
- Rare plants
ASJC Scopus subject areas
- Ecology, Evolution, Behavior and Systematics
- Plant Science