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

2014 John Doyen
Biology Glossary
Rarity Status Glossary
Occurrence Data from DFG
California Natural Diversity Database Glossary
  • Total # of Known Element Occurrences: 48
  • Element Occurrence Ranks:
    A B C D X U
    4 20 6 1 2 15
  • Population Status:
    >20 yrs
    <=20 yrs
    25 23
  • Presence:
    Present Extant Possibly Extirpated Extirpated
    46 2 0
Notes Glossary
  • 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 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: 2015-01-06
Location Glossary
  • 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,  Westley (443C)* 37121E2,  Tracy (444B) 37121F4,  Midway (445A) 37121F5,  Altamont (445B) 37121F6,  Stockton West (462A) 37121H3,  Union Island (462C)* 37121G4,  Brentwood (463B) 37121H6,  Byron Hot Springs (463C) 37121G6,  Antioch South (464A) 37121H7,  Clayton (464B) 37121H8,  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
Suggested Citation
CNPS, Rare Plant Program. . Inventory of Rare and Endangered Plants (online edition, v8-02). California Native Plant Society, Sacramento, CA. Website [accessed ].

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