Species Details

Chorizanthe cuspidata var. cuspidata

San Francisco Bay spineflower

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Scientific Name:
Chorizanthe cuspidata Wats. var. cuspidata
Common Name:
San Francisco Bay spineflower
Family: Polygonaceae
Element Code: PDPGN04081
USDA Plants Symbol: CHCUC
Synonyms/Other Names:
Lifeform: annual herb
Blooming Period: Apr-Jul(Aug)
Elevation:
3 - 215 meters
10 - 705 feet
General Habitat:
  • Coastal bluff scrub
  • Coastal dunes
  • Coastal prairie
  • Coastal scrub
General Micro Habitat:
Micro Habitat:
  • Sandy
Notes:
Plant may occur in SCL Co.; need more information. Threatened by non-native plants. Closely related to C. pungens. Some plants from Pt. Reyes, MRN Co. (485B, 485C) to Bodega Head, SON Co. (502C, 503D) probably intermediate to var. villosa. See C. cuspidata in The Jepson Manual. See Proceedings of the Davenport Academy of Natural Sciences 4:60 (1884) for original description, and Phytologia 66(2):127-129 (1989) for taxonomic treatment.
Threats:
Taxonomy:
Other:
References:
Total Occurrences: 17
Element Occurrence Ranks:
A B C D X U
0 0 3 0 2 12
Occurrence Status:
Historical >20 Years 12
Recent <=20 Years 5
Presence:
Presumed Extant 15
Possibly Extirpated 1
Presumed Extirpated 1
California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
Alameda (ALA)*, Marin (MRN), San Francisco (SFO), San Mateo (SMT), Sonoma (SON)?
Quads: Name (Quad Code)
Bodega Head (3812331)?, Montara Mountain (3712254), Oakland West (3712273)*, San Francisco North (3712274), San Francisco South (3712264), San Rafael (3712285), Tomales (3812228)?
Notes:
Definitions of codes following a county and/or quad:
* Presumed extirpated
(?) Occurrence confirmed, but possibly extirpated
Quad and county data is imported from the CNDDB. Species may be present in other areas where conditions are favorable. These data should NOT be substituted for pre-project review or for on-site surveys.

Map

Presumed Extant
Counties   Quads