Taxon Report

Camissonia kernensis (Munz) Raven ssp. kernensis

Kern County evening-primrose

Print Report

Taxon Summary

Camissonia kernensis ssp. kernensis, commonly known as Kern County evening-primrose, is a annual herb in the Onagraceae that is found only in California. It occurs within Chaparral, Joshua tree "woodland", and Pinyon and juniper woodland, growing at elevations from 790 to 2130 meters. Camissonia kernensis ssp. kernensis is ranked 4.3, Plants of Limited Distribution, A Watch List; Not very threatened in California.

Classification


Scientific Name:	Camissonia kernensis (Munz) Raven ssp. kernensis
Common Name:	Kern County evening-primrose
Family:	Onagraceae
Element Code:	PDONA030V2
USDA Plants Symbol:	CAKEK
Synonyms/Other Names:

Ecology and Life History


Lifeform:	annual herb
Blooming Period: Mar-May	Mar-May
Elevation:	790-2130 (2590-6990)
General Habitats:	Chaparral, Joshua tree "woodland", Pinyon and juniper woodland
Microhabitat:	Granitic, Gravelly (sometimes), Sandy (sometimes)
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	4.3
Global Rank:	G4T3
State Rank:	S3
State List:	None
Fed List:	None
Other Status:
CRPR Changes:

Occurrence Data from the CNDDB


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

Location


California Endemic: True
California Counties and Islands: Name (Code)
Kern (KRN)
Quads: Name (Quad Code)
Cane Canyon (3511852), Cinco (3511831), Claraville (3511843), Cross Mountain (3511832), El Paso Peaks (3511746), Freeman Junction (3511758), Horse Canyon (3511851), Lake Isabella North (3511864), Lamont Peak (3511871), Mojave (3511812), Owens Peak (3511768), Pinyon Mtn. (3511842), Ridgecrest South (3511756), Walker Pass (3511861), Weldon (3511863), Yucca Valley North (3411624)

Threat List Data from the CNDDB


Threat List Total:	0
EOs with Threat Listed:	Total EOs	% of EOs
	0	0 %

Notes



See American Journal of Botany 18:737 (1931) for original description, Brittonia 16:284 (1964) for revised nomenclature, and Contributions from the U.S. National Herbarium 37(5):309-310 (1969) for taxonomic treatment.
Threats:

Taxonomy:

Selected References

Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 10 July 2025].