CNPS Inventory Plant Detail

Chorizanthe breweri

Common Name:	Brewer's spineflower
Family:	Polygonaceae
Synonyms:
Element Code:	PDPGN04050
Full Name:	Chorizanthe breweri Wats.
USDA PLANTS Symbol:	CHBR2

Biology
Lifeform: annual herb Blooming Period: April - August Habitat: serpentinite, rocky or gravelly. • Closed-cone coniferous forest • Chaparral • Cismontane woodland • Coastal scrub

Rarity Status
CA Rare Plant Rank: 1B.3 Rare, threatened, or endangered in California and elsewhere .3: Not very endangered in California Federal Listing Status: Not Listed State Listing Status: Not Listed State Rank: S2.2 S2: Imperiled. .2: Threatened. Global Rank: G2 G2: Imperiled.

Occurrence Data from DFG
California Natural Diversity Database

Total # of Known Element Occurrences: 30
Element Occurrence Ranks:

A B C D X U

8 4 5 0 0 13

Population Status:

Historic >20 yrs	Recent <=20 yrs
17	13

Presence:

Present Extant	Possibly Extirpated	Extirpated
30	0	0

Notes

Known from approximately twenty occurrences. Threatened by pipeline construction. Possibly threatened by road construction, road maintenance, and vehicles. Closely related to C. staticoides. See Proceedings of the American Academy of Arts and Sciences 12:270 (1877) for original description, and Phytologia 66(2):163-164 (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: 1980-01-01
Last Update: 2010-03-15

Location

Elevation: 45 - 800 meters

California Endemic: yes

States: California

California Counties and Islands: name (code)
Monterey (MNT), San Luis Obispo (SLO)

Quads: name (DWR code) USGS code
Arroyo Grande NE (221A) 35120B5, Pismo Beach (221B) 35120B6, Atascadero (246B) 35120D6, San Luis Obispo (246C) 35120C6, Lopez Mtn. (246D) 35120C5, Morro Bay South (247D) 35120C7, Burro Mountain (296D) 35121G3

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

468

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 .

-120.75,35.25