Species Details

Navarretia leucocephala ssp. pauciflora

few-flowered navarretia

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Photo of Navarretia leucocephala ssp. pauciflora

Species Description:

Navarretia leucocephala ssp. pauciflora, commonly known as few-flowered navarretia, is a annual herb in the Polemoniaceae that is found only in California. It occurs within Vernal pools, growing at elevations from 400 to 855 meters. Navarretia leucocephala ssp. pauciflora is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.

Classification

Scientific Name: Navarretia leucocephala Benth. ssp. pauciflora (Mason) A.G. Day
Common Name: few-flowered navarretia
Family:	Polemoniaceae
Element Code:	PDPLM0C0E4
USDA Plants Symbol:	NALEP
Synonyms/Other Names: Navarretia pauciflora Mason
Name Status:	JEP, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	1B.1
Fed List:	FE (1997-06-18)
State List:	CT (1990-01-01)
Global Rank:	G4T1
State Rank:	S1
Other Status:	SB_CalBG/RSABG
CRPR Changes:
Add Date:	1974-01-01
Date Edited:	2024-11-05

Ecology and Life History

Lifeform: annual herb

Blooming Period: May-Jun

Elevation:
400 - 855 meters
1310 - 2805 feet

General Habitats:

Vernal pools (volcanic ash)

Microhabitat Details:

Microhabitat:

Notes

Notes: Threatened by altered hydrology, erosion, grazing, vehicles, road widening, and recreation. Intergrades rarely with ssp. plieantha. State-listed as N. pauciflora. See Madroño 8(6):200 (1946) 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:	11
	Total EOs	% of EOs
EOs with Threat Listed:	7	70 %
Grazing	4	40%
Road/trail construction/maint.	3	30%
Recreational use (non-ORV)	2	20%
ORV activity	2	20%
Agriculture	2	20%
Altered flood/tidal/hydrologic regime	2	20%
Development	1	10%
Erosion/runoff	1	10%
Feral pigs	1	10%
Other	1	10%
Non-native plant impacts	1	10%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					10
A	B	C	D	X	U
1	4	1	0	0	4

Occurrence Status:
Historical >20 Years	5
Recent <=20 Years	5

Presence:
Presumed Extant	10
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
Lake (LAK), Napa (NAP)

Quads: Name (Quad Code)
Capell Valley (3812242), Clearlake Highlands (3812286), Kelseyville (3812287), Lower Lake (3812285), The Geysers (3812277), Whispering Pines (3812276), Yountville (3812243)

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