Taxon Report
Chorizanthe valida Wats.Sonoma spineflower |
|
Classification
|
Scientific Name: |
Chorizanthe valida Wats. |
|
Common Name: |
Sonoma spineflower |
| Family: | Polygonaceae |
| Element Code: | PDPGN040V0 |
| USDA Plants Symbol: | CHVA |
|
Synonyms/Other Names: |
|
Ecology and Life History
| Lifeform: | annual herb |
| Blooming Period: Jun-Aug | Jun-Aug |
| Elevation: | 10-305 (35-1000) |
| General Habitats: | Coastal prairie |
| Microhabitat: | |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 1B.1 |
| Global Rank: | G1 |
|
State Rank: |
S1 |
| State List: | CE |
| Fed List: | FE |
| Other Status: | SB_CalBG/RSABG |
|
CRPR Changes: |
|
Occurrence Data from the CNDDB
| Total Occurrences: | 6 |
| Element Occurrence Ranks: | |
| Excellent (A) | 0 |
| Good (B) | 3 |
| Fair (C) | 0 |
| Poor (D) | 0 |
| None (X) | 3 |
| Unknown (U) | 0 |
| California Endemic: True | |
| California Counties and Islands: Name (Code) | |
| Marin (MRN), Sonoma (SON)* | |
| Quads: Name (Quad Code) | |
| Arched Rock (3812342), Drakes Bay (3812218), Fort Ross (3812352)*, Petaluma (3812226)?*, Petaluma River (3812225), Plantation (3812353), Sebastopol (3812247)* | |
Threat List Data from the CNDDB
| Threat List Total: | 4 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 3 | 50 % | |
| Grazing | 3 | 50% |
| Other | 2 | 33% |
| Road/trail construction/maint. | 1 | 16% |
| Non-native plant impacts | 1 | 16% |
Notes
|
Thought extinct for 77 years; only known extant occurrence was rediscovered in 1980 at Pt. Reyes NS. Experimental introduction work ongoing as of 2000. Closely related to C. pungens |
|
Threats: |
|
Taxonomy: |
Citation
California Native Plant Society, Rare Plant Program. 2024. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 25 December 2024].