Species Details

Hesperolinon drymarioides

drymaria-like western flax

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Classification

Scientific Name: Hesperolinon drymarioides (Curran) Small
Common Name: drymaria-like western flax
Family:	Linaceae
Element Code:	PDLIN01090
USDA Plants Symbol:	HEDR4
Synonyms/Other Names:

Conservation Status

CA Rare Plant Rank:	1B.2
Fed List:	None
State List:	None
Global Rank:	G2
State Rank:	S2
Other Status:	BLM_S; USFS_S
CRPR Changes:
Add Date:	1974-01-01
Date Edited:	2022-03-01

Ecology and Life History

Lifeform: annual herb

Blooming Period: May-Aug

Elevation:
100 - 1130 meters
330 - 3710 feet

General Habitats:

Closed-cone coniferous forest
Chaparral
Cismontane woodland
Valley and foothill grassland

Microhabitat Details:

Microhabitat:

Serpentine

Notes

Notes:
Threats: Threatened by mining and vehicles, and potentially threatened by renewable energy development.
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	5
	Total EOs	% of EOs
EOs with Threat Listed:	14	58 %
Development	6	25%
Road/trail construction/maint.	5	20%
ORV activity	4	16%
Mining	2	8%
Wood cutting or brush clearing	1	4%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					24
A	B	C	D	X	U
6	8	7	0	0	3

Occurrence Status:
Historical >20 Years	11
Recent <=20 Years	13

Presence:
Presumed Extant	24
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
Colusa (COL), Glenn (GLE), Lake (LAK), Napa (NAP)

Quads: Name (Quad Code)
Elk Mountain (3912238), Gilmore Peak (3912235), Hough Springs (3912225), Jericho Valley (3812274), Knoxville (3812273), Leesville (3912224), Potato Hill (3912237), St. John Mtn. (3912246), Stonyford (3912245), Wilbur Springs (3912214), Wilson Valley (3812284)

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.

Regional Map

Map

Presumed Extant

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Selected References

Original Description:	Bulletin of the California Academy of Sciences 1:152 (1885)
Taxonomic Treatment:	University of California Publications in Botany 32:235-314 (1961)
Species Account:	Hesperolinon drymarioides profile for potential Species of Conservation Concern evaluation (2018)
Other:	USFS Potential Species of Conservation Concern Profile