CNPS Inventory Plant Detail

Chorizanthe cuspidata var. cuspidata

Common Name:	San Francisco Bay spineflower
Family:	Polygonaceae
Synonyms:
Element Code:	PDPGN04081
Full Name:	Chorizanthe cuspidata Wats. var. cuspidata
USDA PLANTS Symbol:	CHCUC

Biology
Lifeform: annual herb Blooming Period: April - August Habitat: sandy. • Coastal bluff scrub • Coastal dunes • Coastal prairie • Coastal scrub

Rarity Status
CA Rare Plant Rank: 1B.2 Rare, threatened, or endangered in California and elsewhere .2: Fairly endangered in California Federal Listing Status: Not Listed State Listing Status: Not Listed State Rank: S2.2 S2: Imperiled. .2: Threatened. Global Rank: G2T2 T2: Imperiled. G2: (species) Imperiled.

Occurrence Data from DFG
California Natural Diversity Database

Total # of Known Element Occurrences: 20
Element Occurrence Ranks:

A B C D X U

0 2 5 1 2 10

Population Status:

Historic >20 yrs	Recent <=20 yrs
18	2

Presence:

Present Extant	Possibly Extirpated	Extirpated
18	1	1

Notes

Plant may occur in SCL Co.; need more information. 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.
To submit rare plant observation data, use the CNDDB field survey form. Please see also the CNPS Rare Plant Data page.
Date Added: 1994-01-01
Last Update: 2010-03-15

Location

Elevation: 3 - 215 meters

California Endemic: yes

States: California

California Counties and Islands: name (code)
Alameda (ALA) *, Marin (MRN), San Francisco (SFO), San Mateo (SMT), Sonoma (SON) ?

Quads: name (DWR code) USGS code
San Francisco South (448B) 37122F4, Montara Mountain (448C) 37122E4, San Mateo (448D) 37122E3, San Francisco North (466C) 37122G4, Oakland West (466D)* 37122G3, San Rafael (467A) 37122H5, Tomales (485B)? 38122B8, Drakes Bay (485C)? 38122A8, Valley Ford (502C)? 38122C8, Bodega Head (503D)? 38123C1

Notes:

Definitions of codes preceding a county and/or quad:
*		Presumed extirpated
?		Uncertain about distribution or identity
?*		Uncertain about distribution, but presumed extirpated if once present
(?)		Occurrence confirmed, but possibly extirpated

Species may be present in other areas where conditions are favorable.

Presumed Extant

Presumed Extirpated or Unknown

1620

Links to Leading Resources of Taxon Information
USDA PLANTS Calflora CalPhotos Consortium of California Herbaria California Department of Fish and Game: CNDDB Quick Viewer

Suggested Citation
California Native Plant Society (CNPS). Inventory of Rare and Endangered Plants (online edition, v8-01a). California Native Plant Society. Sacramento, CA. Accessed on .

-122.5,37.875