Species Details

Hesperolinon tehamense

Tehama County western flax

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Classification

Scientific Name: Hesperolinon tehamense H.K. Sharsm.
Common Name: Tehama County western flax
Family:	Linaceae
Element Code:	PDLIN010C0
USDA Plants Symbol:	HETE8
Synonyms/Other Names:

Conservation Status

CA Rare Plant Rank:	1B.3
Fed List:	None
State List:	None
Global Rank:	G2
State Rank:	S2
Other Status:	BLM_S
CRPR Changes:
Add Date:	1994-01-01
Date Edited:	2022-03-01

Ecology and Life History

Lifeform: annual herb

Blooming Period: May-Jul

Elevation:
100 - 1250 meters
330 - 4100 feet

General Habitats:

Chaparral
Cismontane woodland

Microhabitat Details:

Microhabitat:

Serpentine

Notes

Notes:
Threats: Threatened by vehicles and road maintenance.
Taxonomy: Some plants from ALA, LAK, NAP, and STA cos. were previously treated as H. serpentinum ined.; plants from the inner north coast ranges of LAK and NAP cos. are now treated as H. sharsmithiae. Plants from ALA Co. are possibly H. clevelandii; needs further study. Similar to H. sharsmithiae.

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	3
	Total EOs	% of EOs
EOs with Threat Listed:	8	50 %
Other	5	31%
Road/trail construction/maint.	5	31%
Non-native plant impacts	2	12%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					16
A	B	C	D	X	U
8	1	0	0	0	7

Occurrence Status:
Historical >20 Years	13
Recent <=20 Years	3

Presence:
Presumed Extant	16
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
Glenn (GLE), Tehama (TEH)

Quads: Name (Quad Code)
Chrome (3912265), Elk Creek (3912255), Felkner Hill (3912256), Hall Ridge (3912276), Newville (3912275), Paskenta (3912285), Raglin Ridge (4012216), Riley Ridge (3912286)

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:	University of California Publications in Botany 32:298 (1961)
Species Account:	Hesperolinon tehamense profile for potential Species of Conservation Concern evaluation (2018)
Other:	USFS Potential Species of Conservation Concern Profile