Taxon Report

Clarkia imbricata Lewis & Lewis

Vine Hill clarkia

Print Report

Classification


Scientific Name:	Clarkia imbricata Lewis & Lewis
Common Name:	Vine Hill clarkia
Family:	Onagraceae
Element Code:	PDONA050K0
USDA Plants Symbol:	CLIM
Synonyms/Other Names:

Ecology and Life History


Lifeform:	annual herb
Blooming Period: Jun-Aug	Jun-Aug
Elevation:	50-75 (165-245)
General Habitats:	Chaparral, Valley and foothill grassland
Microhabitat:	Acidic, Loam, Sandy
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	1B.1
Global Rank:	G1
State Rank:	S1
State List:	CE
Fed List:	FE
Other Status:	SB_CalBG/RSABG; SB_UCBG
CRPR Changes:

Occurrence Data from the CNDDB


Total Occurrences:	2
Element Occurrence Ranks:
Excellent (A)	0
Good (B)	1
Fair (C)	1
Poor (D)	0
None (X)	0
Unknown (U)	0

Location


California Endemic: True
California Counties and Islands: Name (Code)
Sonoma (SON)
Quads: Name (Quad Code)
Sebastopol (3812247)

Threat List Data from the CNDDB


Threat List Total:	8
EOs with Threat Listed:	Total EOs	% of EOs
	2	100 %
Non-native plant impacts	2	100%
Other	2	100%
Agriculture	2	100%
Development	2	100%
Wood cutting or brush clearing	2	100%
Hybridization	1	50%
Over-collecting/poaching	1	50%
Road/trail construction/maint.	1	50%

Notes



Known from only two extant occurrences, one of which is introduced; a third, natural occurrence has been extirpated. Threatened by development and road maintenance. See Madroño 12(2):38 (1953) for original description.
Threats:

Taxonomy:

Selected References

Citation California Native Plant Society, Rare Plant Program. 2024. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 25 December 2024].