Taxon Report

Navarretia setiloba Cov.

Piute Mountains navarretia

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Taxon Summary

Navarretia setiloba, commonly known as Piute Mountains navarretia, is a annual herb in the Polemoniaceae that is found only in California. It occurs within Cismontane woodland, Pinyon and juniper woodland, and Valley and foothill grassland, growing at elevations from 285 to 2100 meters. Navarretia setiloba is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.

Classification


Scientific Name:	Navarretia setiloba Cov.
Common Name:	Piute Mountains navarretia
Family:	Polemoniaceae
Element Code:	PDPLM0C0S0
USDA Plants Symbol:	NASE2
Synonyms/Other Names:

Ecology and Life History


Lifeform:	annual herb
Blooming Period: Apr-Jul	Apr-Jul
Elevation:	285-2100 (935-6890)
General Habitats:	Cismontane woodland, Pinyon and juniper woodland, Valley and foothill grassland
Microhabitat:	Clay (sometimes), Gravelly (sometimes), Loam (sometimes)
Microhabitat Details:	gravelly loam

Conservation Status


CA Rare Plant Rank:	1B.1
Global Rank:	G2
State Rank:	S2
State List:	None
Fed List:	None
Other Status:	BLM_S; SB_CalBG/RSABG; USFS_S
CRPR Changes:

Occurrence Data from the CNDDB


Total Occurrences:	56
Element Occurrence Ranks:
Excellent (A)	3
Good (B)	10
Fair (C)	2
Poor (D)	0
None (X)	1
Unknown (U)	40

Location


California Endemic: True
California Counties and Islands: Name (Code)
Kern (KRN), Los Angeles (LAX), Tulare (TUL)
Quads: Name (Quad Code)
Arvin (3511827), Bear Mountain (3511826), Bena (3511836), Eagle Rest Peak (3411982), Edison (3511837), Frazier Mtn. (3411878), Grapevine (3411888), Lake Isabella South (3511854), Lamont (3511838), Lebec (3411877), Mint Canyon (3411844), Miracle Hot Springs (3511855), Oiler Peak (3511835), Pastoria Creek (3411887), Pine Mountain (3511857), Piute Peak (3511844), Pleito Hills (3411981), Posey (3511876), Rio Bravo Ranch (3511847), Tejon Hills (3511817), Tejon Ranch (3511816)

Threat List Data from the CNDDB


Threat List Total:	6
EOs with Threat Listed:	Total EOs	% of EOs
	7	13 %
Development	3	5%
Foot traffic/trampling	2	3%
Grazing	2	3%
ORV activity	2	3%
Road/trail construction/maint.	2	3%
Vandalism/dumping/litter	1	1%

Notes



Many historical occurrences have been searched without success. Threatened by residential development and vehicles. See Contributions from the U.S. National Herbarium 4:153 (1893) for original description.
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 2 November 2025].