CNPS.ORG Inventory of Rare and Endangered Plants - 7th edition interface
v7-18mar 3-19-18
Status: record blepharizonia_plumosa - Sun, Nov. 28, 2021 12:35 ET c
Blepharizonia plumosa
common namebig tarplant
CalPhotos image
more photos
© 1994 Robert E. Preston  Follow image link for photo data.
Alternative link to images listed as "Blepharizonia plumosa ssp. plumosa"
life formannual herb
CA Rare Plant Rank
List 1B.1
LIST 1B: Rare, threatened, or endangered in California and elsewhere.
     0.1: Seriously endangered in California
state rank
S2      ranking system key
global rank
G2     G2: 6-20 occurrences OR 1,000-3,000 individuals OR 2,000-10,000 acres
Where did the "RED" code go?
CA state listingNone  
federal listingNone  
where found
MAPS - Use v8 link below.

Topographic quads (16):
Patterson (424B) 3712142, Copper Mountain (425A) 3712143, Westley (443C)* 3712152, Tracy (444B) 3712164, Midway (445A) 3712165, Altamont (445B) 3712166, Stockton West (462A) 3712183, Union Island (462C)* 3712174, Brentwood (463B) 3712186, Byron Hot Springs (463C) 3712176, Antioch South (464A) 3712187, Clayton (464B) 3712188, Walnut Creek (465A)(*?) 3712281, Honker Bay (481C)(*?) 3812118, Antioch North (481D)(*?) 3812117, Benicia (482C) 3812212
quad data info

Counties, states, regions:
Alameda (ALA), Contra Costa (CCA), San Joaquin (SJQ), Solano (SOL)*, Stanislaus (STA)
A reminder: Species not recorded for a given area may nonetheless be present, especially where favorable conditions occur.
CNPS habitats•Valley and foothill grassland (VFGrs)/Usually clay.
blooming period Jul-Oct  
elevation range30 - 505 meters
Historical occurrences probably extirpated by agriculture and non-native plants. Seriously threatened by urbanization; also threatened by disking, residential development, and non-native plants. See B. plumosa ssp. plumosa in TJM (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 Madroņo 48(4):272-285 (2001) for demography and population biology.
full nameBlepharizonia plumosa (Kell.) Greene
Version 8    INVENTORY VERSION 8 interface for this taxon, including GIS and more links

Additional information:
standard acronym  BLPL Element Code  PDAST1C011
CalFlora species this taxon    CalFlora genus related taxa
Jepson Online Jepson Interchange  Jepson Manual and other resources
Google search
search Google CNPS website    search Google entire web

Suggested citation: California Native Plant Society (CNPS). 2018. Inventory of Rare and Endangered Plants (online edition, v7-18mar). California Native Plant Society. Sacramento, CA. Accessed on Sun, Nov. 28, 2021 from

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