Taxon Report

Clarkia xantiana Gray ssp. parviflora (Eastw.) Lewis & Raven

Kern Canyon clarkia

Print Report


Taxon Summary

Clarkia xantiana ssp. parviflora, commonly known as Kern Canyon clarkia, is a annual herb in the Onagraceae that is found only in California. It occurs within Chaparral, Cismontane woodland, Great Basin scrub, and Valley and foothill grassland, growing at elevations from 700 to 3620 meters. Clarkia xantiana ssp. parviflora is ranked 4.2, Plants of Limited Distribution, A Watch List; Moderately threatened in California.


  Classification

Scientific Name:
Clarkia xantiana Gray ssp. parviflora (Eastw.) Lewis & Raven
Common Name:
Kern Canyon clarkia
Family: Onagraceae
Element Code: PDONA05181
USDA Plants Symbol: CLXAP
Synonyms/Other Names:

Ecology and Life History

Lifeform: annual herb
Blooming Period: May-Jun May-Jun
Elevation: 700-3620 (2295-11875)
General Habitats: Chaparral, Cismontane woodland, Great Basin scrub, Valley and foothill grassland
Microhabitat: Roadsides (sometimes), Rocky (sometimes), Sandy (often), Slopes
Microhabitat Details:

Conservation Status

CA Rare Plant Rank: 4.2
Global Rank: G4T3?
State Rank:
S3?
State List: None
Fed List: None
Other Status: SB_CalBG/RSABG
CRPR Changes:
  • changed from 1B.2 to 4.2 on 2007-08-15

Occurrence Data from the CNDDB

Total Occurrences: 21
Element Occurrence Ranks:
   Excellent (A) 0
   Good (B) 0
   Fair (C) 0
   Poor (D) 0
   None (X) 1
   Unknown (U) 20
California Endemic:  True
California Counties and Islands: Name (Code)
Inyo (INY), Kern (KRN), Los Angeles (LAX), Tulare (TUL)
Quads: Name (Quad Code)
Alta Sierra (3511865), Breckenridge Mtn. (3511845), Cane Canyon (3511852), Coso Junction (3611718), Cross Mountain (3511832), Durrwood Creek (3611814), Fairview (3511884)*, Haiwee Pass (3611821), Kernville (3511874), Lake Isabella North (3511864), Lake Isabella South (3511854), Lamont Peak (3511871), Long Canyon (3611811), Miracle Hot Springs (3511855), Onyx (3511862), Pinyon Mtn. (3511842), Piute Peak (3511844), Reward (3511936), Valyermo (3411747), Walker Pass (3511861), Weldon (3511863), Woolstalf Creek (3511853)

Notes

Possibly threatened by wind energy development and road widening. See Bulletin of the Torrey Botanical Club 30:492 (1903) for original description, and MadroƱo 39(3):163-169 (1992) for revised nomenclature.
Threats:
Taxonomy:

Selected References

CRPR List Change on 2007-08-15
Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 27 January 2025].