Hesperolinon bicarpellatum
Common Name: two-carpellate western flax
Family: Linaceae
Element Code: PDLIN01020
Full Name: Hesperolinon bicarpellatum (H.K. Sharsm.) H.K. Sharsm.

Biology Glossary
Rarity Status Glossary
Occurrence Data from DFG
California Natural Diversity Database Glossary
  • Total # of Known Element Occurrences: 22
  • Element Occurrence Ranks:
    A B C D X U
    5 1 0 0 0 16
  • Population Status:
    >20 yrs
    <=20 yrs
    14 8
  • Presence:
    Present Extant Possibly Extirpated Extirpated
    22 0 0
Notes Glossary
  • Previously confused with H. serpentinum, which also occurs on serpentinite soils in the same general area. Threatened by development and grazing. See University of California Publications in Botany 32:235-314 (1961) 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: 1974-01-01
  • Last Update: 2010-03-15
Location Glossary
  • Elevation: 60 - 1005 meters
  • California Endemic: yes
  • States: California
  • California Counties and Islands:   name (code)
    Lake (LAK),  Napa (NAP),  Sonoma (SON)
  • Quads:   name (DWR code) USGS code
    Capell Valley (499B) 38122D2,  Yountville (500A) 38122D3,  Walter Springs (516A) 38122F3,  Aetna Springs (516B) 38122F4,  St. Helena (516C) 38122E4,  Chiles Valley (516D) 38122E3,  Detert Reservoir (517A) 38122F5,  Mount St. Helena (517B) 38122F6,  Jericho Valley (532C) 38122G4,  Clearlake Highlands (533B) 38122H6,  Whispering Pines (533C) 38122G6,  Middletown (533D) 38122G5,  Wilbur Springs (547C) 39122A4,  Bartlett Mtn. (549A) 39122B7
  • 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 403
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 http://www.rareplants.cnps.org [accessed ].

38122D2=Capell Valley (499B) 38122D2;38122D3=Yountville (500A) 38122D3;38122F3=Walter Springs (516A) 38122F3;38122F4=Aetna Springs (516B) 38122F4;38122E4=St. Helena (516C) 38122E4;38122E3=Chiles Valley (516D) 38122E3;38122F5=Detert Reservoir (517A) 38122F5;38122F6=Mount St. Helena (517B) 38122F6;38122G4=Jericho Valley (532C) 38122G4;38122H6=Clearlake Highlands (533B) 38122H6;38122G6=Whispering Pines (533C) 38122G6;38122G5=Middletown (533D) 38122G5;39122A4=Wilbur Springs (547C) 39122A4;39122B7=Bartlett Mtn. (549A) 39122B7