Hesperolinon breweri

Brewer's western flax
Family:Linaceae

Rarity

CNPS-EB: *A2
State CNPS: 1B.2
Global Rank: G2
CNDDB Rank: S2

27 current natural populations

Criteria:
  • Limited/Threatened Habitat
  • Small Geographical Range

Ecology

Flowers May - June
Habitats:
  • Grassland (Annual or Perennial)
  • Serpentine or Serpentine-derived soils

All Hesperolinon

  • H. breweri
  • H. californicum (B)
  • H. clevelandii (A1)
  • H. disjunctum (A1)
  • H. micranthum (A2)
  • H. tehamense (*A1?)
  • Populations

    Key
    LocationPop IDLast RecordedNotes
    Black Diamond - Markley Canyon12022-12-31
    Black Diamond - Nortonville272022-12-31
    Black Diamond Rgnl Preserve22022-12-31
    Chaparral Springs - S of Clayton32003-12-31
    Los Vaqueros Watershed222004-05-18
    Mt. Diablo State Park - East side142014-07-20
    Mt. Diablo State Park - East side172015-04-25
    Mt. Diablo State Park - North side52003-06-15
    Mt. Diablo State Park - North side62020-05-03
    Mt. Diablo State Park - North side72021-05-07
    Mt. Diablo State Park - North side82011-06-20
    Mt. Diablo State Park - North side102003-06-21
    Mt. Diablo State Park - North side112003-12-31
    Mt. Diablo State Park - North side122012-06-10
    Mt. Diablo State Park - North side132005-07-01
    Mt. Diablo State Park - North side252022-04-15
    Mt. Diablo State Park - North side262023-06-17
    Mt. Diablo State Park - North side282012-06-10
    Mt. Diablo State Park - South side182015-04-27
    Mt. Diablo State Park - Summit and Upper area - 2500 ft and abo92021-05-14
    Mt. Diablo State Park - Summit and Upper area - 2500 ft and abo152022-05-29
    Mt. Diablo State Park - Summit and Upper area - 2500 ft and abo162017-05-28
    Mt. Diablo State Park - Summit and Upper area - 2500 ft and abo232021-05-07
    Mt. Diablo State Park - Summit and Upper area - 2500 ft and abo242022-05-12
    Round Valley Rgnl Park202003-12-31
    Sand Creek212002-12-31
    Tesla, Corral Hollow42014-05-09
    Morgan Territory - other or unknown sites191947-06-02Historic