Taxon Details
Chorizanthe valida
Sonoma spineflower
View Report Copy Link Calflora eFlora CCH CalPhotos iNaturalist
|
Taxon Summary:
Chorizanthe valida, commonly known as Sonoma spineflower, is a annual herb in the Polygonaceae that is found only in California. It occurs within Coastal prairie, growing at elevations from 10 to 305 meters. Chorizanthe valida is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.|
Scientific Name: Chorizanthe valida Wats. |
||
|
Common Name: Sonoma spineflower |
||
| Family: | Polygonaceae | |
| Element Code: | PDPGN040V0 | |
| USDA Plants Symbol: | CHVA | |
|
Synonyms/Other Names: |
||
| Name Status: |
JEF, FNA, POWO, IPNI, Tropicos |
|
| CA Rare Plant Rank: | 1B.1 |
| Fed List: | FE (1992-06-22) |
| State List: | CE (1990-01-01) |
| Global Rank: | G1 |
|
State Rank: |
S1 |
| Other Status: | SB_CalBG/RSABG |
|
CRPR Changes: |
|
| Add Date: | 1974-01-01 |
| Date Edited: | 2021-05-26 |
| Lifeform: annual herb | ||||||||||||||
Blooming Period: Jun-Aug
|
||||||||||||||
|
Elevation:
10 - 305 meters 35 - 1000 feet |
||||||||||||||
General Habitats:
|
||||||||||||||
| Microhabitat Details: | ||||||||||||||
|
Microhabitat:
|
||||||||||||||
|
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. See Proceedings of the American Academy of Arts and Sciences 12:271 (1877) for original description, Phytologia 66(2):132-134 (1989) for taxonomic treatment, Fremontia 18(1):17-18 (1990) for species account, and Madroño 39(4):271-280 (1992) and 40(4):285-288 (1993) for discussion of grazing effects. |
|
|
Threats: |
|
|
Taxonomy: |
|
| Threat List Total: | 4 | |
| Total EOs | % of EOs | |
| EOs with Threat Listed: | 3 | 50 % |
| THREAT LIST: | ||
|---|---|---|
| Grazing | 3 | 50% |
| Other | 2 | 33% |
| Road/trail construction/maint. | 1 | 16% |
| Non-native plant impacts | 1 | 16% |
| Total Occurrences: | 6 | ||||
| Element Occurrence Ranks: | |||||
|---|---|---|---|---|---|
| A | B | C | D | X | U |
| 0 | 3 | 0 | 0 | 3 | 0 |
| Occurrence Status: | |||||
|---|---|---|---|---|---|
| Historical >20 Years | 3 | ||||
| Recent <=20 Years | 3 | ||||
| Presence: | |||||
|---|---|---|---|---|---|
| Presumed Extant | 3 | ||||
| Possibly Extirpated | 3 | ||||
| Presumed Extirpated | 0 | ||||
| California Endemic: | |||||||||||||
| California Island: | |||||||||||||
|
States: Name (Code) California (CA) |
|||||||||||||
|
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)* |
|||||||||||||
Notes:
|
|||||||||||||
Presumed Extant
Click on quad for name. Hold Shift Key to use mouse scroll wheel