CNPS Inventory Plant Detail

Blepharizonia plumosa

Common Name:	big tarplant
Family:	Asteraceae
Synonyms:	Blepharizonia plumosa ssp. plumosa
Element Code:	PDAST1C011
Full Name:	Blepharizonia plumosa (Kell.) Greene
USDA PLANTS Symbol:	BLPL

Biology
Lifeform: annual herb Blooming Period: July - October Habitat: Usually clay.. • Valley and foothill grassland

Rarity Status
CA Rare Plant Rank: 1B.1 Rare, threatened, or endangered in California and elsewhere .1: Seriously endangered in California Federal Listing Status: Not Listed State Listing Status: Not Listed State Rank: S1 S1: Critically Imperiled. Global Rank: G1 G1: Critically Imperiled.

Occurrence Data from DFG
California Natural Diversity Database

Total # of Known Element Occurrences: 50
Element Occurrence Ranks:

A B C D X U

4 21 5 1 2 17

Population Status:

Historic >20 yrs	Recent <=20 yrs
13	37

Presence:

Present Extant	Possibly Extirpated	Extirpated
48	2	0

Notes

Historical occurrences probably extirpated by agriculture and non-native plants. Seriously threatened by urbanization; also threatened by disking and residential development. See B. plumosa ssp. plumosa in The Jepson Manual (1993). See Proceedings of the California Academy of Sciences I 5:49 (1873) for original description, Systematic Botany 26(1):184-194 (2001) for elevation to specific rank, and Madroño 48(4):272-285 (2001) for demography and population biology.
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: 2012-02-14

Location

Elevation: 30 - 505 meters

California Endemic: yes

States: California

California Counties and Islands: name (code)
Alameda (ALA), Contra Costa (CCA), San Joaquin (SJQ), Solano (SOL) *, Stanislaus (STA)

Quads: name (DWR code) USGS code
Patterson (424B) 37121D2, Copper Mtn. (425A) 37121D3, Salida (443A) 37121F1, Westley (443C)* 37121E2, Tracy (444B) 37121F4, Midway (445A) 37121F5, Altamont (445B) 37121F6, Cedar Mtn. (445D) 37121E5, Stockton West (462A) 37121H3, Union Island (462C)* 37121G4, Brentwood (463B) 37121H6, Byron Hot Springs (463C) 37121G6, Antioch South (464A) 37121H7, Clayton (464B) 37121H8, Tassajara (464D) 37121G7, Walnut Creek (465A)(*?) 37122H1, Honker Bay (481C)(*?) 38121A8, Antioch North (481D)(*?) 38121A7, Benicia (482C) 38122A2

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

1589

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 .

-121.625,37.75