Species Details

Hesperolinon congestum

Marin western flax

Download Report Calflora  CCH  CalPhotos
No Photo Available
Scientific Name:
Hesperolinon congestum (Gray) Small
Common Name:
Marin western flax
Family: Linaceae
Element Code: PDLIN01060
USDA Plants Symbol: HECO12
Synonyms/Other Names:
Fed List: FT (1995-02-03)
State List: CT (1992-06-01)
Global Rank: G1
State Rank:
S1
CA Rare Plant Rank: 1B.1
Other Status: SB_CalBG/RSABG; SB_UCBG
CRPR Changes:
Add Date: 1974-01-01
Date Edited: 2021-05-26
Lifeform: annual herb
Blooming Period: Apr-Jul
Elevation:
5 - 370 meters
15 - 1215 feet
General Habitat:
  • Chaparral
  • Valley and foothill grassland
General Micro Habitat: serpentinite
Micro Habitat:
Notes:
Protected in part at Ring Mtn. Preserve, MRN Co. Threatened by development, non-native plants, and foot traffic. Potentially threatened by hydrological alterations. See Proceedings of the American Academy of Arts and Sciences 6:521 (1865) for original description, and University of California Publications in Botany 32:235-314 (1961) for taxonomic treatment.
Threats:
Taxonomy:
Other:
References:
Total Occurrences: 27
Element Occurrence Ranks:
A B C D X U
4 10 5 1 3 4
Occurrence Status:
Historical >20 Years 7
Recent <=20 Years 20
Presence:
Presumed Extant 24
Possibly Extirpated 2
Presumed Extirpated 1
California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
Marin (MRN), San Francisco (SFO), San Mateo (SMT)
Quads: Name (Quad Code)
Bolinas (3712286), Novato (3812215), Palo Alto (3712242), Petaluma (3812226), Petaluma River (3812225), San Francisco North (3712274), San Geronimo (3812216), San Mateo (3712253), San Quentin (3712284), San Rafael (3712285), Woodside (3712243)
Notes:
Definitions of codes following a county and/or quad:
* Presumed extirpated
(?) Occurrence confirmed, but possibly extirpated
Quad and county data is imported from the CNDDB. Species may be present in other areas where conditions are favorable. These data should NOT be substituted for pre-project review or for on-site surveys.

Map

Presumed Extant
Counties   Quads