Taxon Details

Navarretia nigelliformis ssp. radians

shining navarretia

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Taxon Summary:

Navarretia nigelliformis ssp. radians, commonly known as shining navarretia, is a annual herb in the Polemoniaceae that is found only in California. It occurs within Cismontane woodland, Valley and foothill grassland, and Vernal pools, growing at elevations from 65 to 1000 meters. Navarretia nigelliformis ssp. radians is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.

Classification

Scientific Name: Navarretia nigelliformis Greene ssp. radians (J.T. Howell) A.G. Day
Common Name: shining navarretia
Family:	Polemoniaceae
Element Code:	PDPLM0C0J2
USDA Plants Symbol:	NANIR
Synonyms/Other Names:
Name Status:	JEF, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	1B.2
Fed List:	None
State List:	None
Global Rank:	G4T2T3
State Rank:	S2S3
Other Status:	BLM_S
CRPR Changes:
Add Date:	1994-01-01
Date Edited:	2024-08-06

Ecology and Life History

Lifeform: annual herb

Blooming Period: (Mar)Apr-Jul

Elevation:
65 - 1000 meters
215 - 3280 feet

General Habitats:

Cismontane woodland
Valley and foothill grassland
Vernal pools

Microhabitat Details:

Microhabitat:

Clay (sometimes)

Notes

Notes: Threatened by development. Possibly threatened by grazing and competition from non-native plants. Similar to N. heterandra. See Leaflets of Western Botany 2(8):136 (1938) for original description, and Novon 3(4):331-340 (1993) for revised nomenclature.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	13
	Total EOs	% of EOs
EOs with Threat Listed:	61	60 %
Development	30	29%
Grazing	30	29%
Non-native plant impacts	15	14%
Improper burning regime	10	9%
Military operations	9	8%
Feral pigs	9	8%
Foot traffic/trampling	8	7%
Road/trail construction/maint.	8	7%
Recreational use (non-ORV)	7	6%
ORV activity	7	6%
Erosion/runoff	2	1%
Agriculture	2	1%
Other	1	0%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					102
A	B	C	D	X	U
11	17	17	2	2	53

Occurrence Status:
Historical >20 Years	57
Recent <=20 Years	45

Presence:
Presumed Extant	100
Possibly Extirpated	2
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
Alameda (ALA), Colusa (COL), Contra Costa (CCA), Fresno (FRE), Madera (MAD), Merced (MER), Monterey (MNT), San Benito (SBT), San Joaquin (SJQ), San Luis Obispo (SLO), Stanislaus (STA), Tulare (TUL)

Quads: Name (Quad Code)
Adelaida (3512067), Antioch South (3712187), Bickmore Canyon (3612152), Bradley (3512077), California Valley (3512031), Cholame (3512063), Cholame Valley (3512073), Ciervo Mtn. (3612045), Clifton Court Forebay (3712175), Cosio Knob (3612112), Creston (3512055), Curry Mountain (3612014), Daulton (3711918), Estrella (3512065), Haystack Mtn. (3712043), Hepsedam Peak (3612037), Hernandez Reservoir (3612047), Idria (3612046), Kismet (3712011), Le Grand (3712022), Lodoga (3912234), Lonoak (3612038), Los Banos Valley (3612181), Mariposa Peak (3612182), Merced (3712034), Midway (3712165), Monarch Peak (3612027), Owens Reservoir (3712032), Parkfield (3512084), Paso Robles (3512066), Patterson (3712142), Planada (3712033), Priest Valley (3612026), Raymond (3711928), Rock Spring Peak (3612048), Salt Canyon (3912213), San Benito (3612151), San Benito Mtn. (3612036), San Miguel (3512076), Santa Margarita (3512045), Shedd Canyon (3512054), Smith Mountain (3612015), Success Dam (3611818), Templeton (3512056), Tent Hills (3512072), The Dark Hole (3512083), Wilbur Springs (3912214), Yosemite Lake (3712044)

Notes:

Definitions of codes following a county and/or quad:
*		Presumed extirpated
(?)		Occurrence confirmed, but possibly extirpated
Quad and county data is imported from the CNDDB. Species may be present in other areas where conditions are favorable. These data should NOT be substituted for pre-project review or for on-site surveys.

Regional Map

Map

Presumed Extant

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CNPS Rare Plant Inventory