Taxon Report

Navarretia nigelliformis Greene ssp. nigelliformis

adobe navarretia

Print Report

Taxon Summary

Navarretia nigelliformis ssp. nigelliformis, commonly known as adobe navarretia, is a annual herb in the Polemoniaceae that is found only in California. It occurs within Valley and foothill grassland (vernally mesic), and Vernal pools (sometimes), growing at elevations from 100 to 1000 meters. Navarretia nigelliformis ssp. nigelliformis is ranked 4.2, Plants of Limited Distribution, A Watch List; Moderately threatened in California.

Classification


Scientific Name:	Navarretia nigelliformis Greene ssp. nigelliformis
Common Name:	adobe navarretia
Family:	Polemoniaceae
Element Code:	PDPLM0C0J1
USDA Plants Symbol:	NANIN
Synonyms/Other Names:

Ecology and Life History


Lifeform:	annual herb
Blooming Period: Apr-Jun	Apr-Jun
Elevation:	100-1000 (330-3280)
General Habitats:	Valley and foothill grassland, Vernal pools
Microhabitat:	Clay, Serpentine (sometimes)
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	4.2
Global Rank:	G4T3
State Rank:	S3
State List:	None
Fed List:	None
Other Status:
CRPR Changes:	added to 4.2 on 2007-04-02

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)
Alameda (ALA), Colusa (COL), Fresno (FRE), Madera (MAD), San Benito (SBT), San Joaquin (SJQ), Tehama (TEH)
Quads: Name (Quad Code)
Glascock Mtn. (3812283), Little Table Mtn. (3711917), Midway (3712165), Pine Flat Dam (3611973), Salt Canyon (3912213), San Benito (3612151), Vina (3912281), Wilson Valley (3812284)

Threat List Data from the CNDDB


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

Notes



Possibly threatened by grazing. See Leaflets West. Bot. 2: 136 (1938) for original subspecies description.
Threats:

Taxonomy:

Selected References

CRPR List Addition on 2007-04-02

Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 31 October 2025].