Taxon Details

Navarretia gowenii

Lime Ridge navarretia

View Report Copy Link Calflora eFlora CCH CalPhotos iNaturalist

Taxon Summary:

Navarretia gowenii, commonly known as Lime Ridge navarretia, is a annual herb in the Polemoniaceae that is found only in California. It occurs within Chaparral, growing at elevations from 180 to 305 meters. Navarretia gowenii is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.

Classification

Scientific Name: Navarretia gowenii L.A. Johnson
Common Name: Lime Ridge navarretia
Family:	Polemoniaceae
Element Code:	PDPLM0C120
USDA Plants Symbol:
Synonyms/Other Names:
Name Status:	JEF, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	1B.1
Fed List:	None
State List:	None
Global Rank:	G1
State Rank:	S1
Other Status:	SB_UCBG
CRPR Changes: added to 1B.1 on 2008-05-15
Add Date:	2008-05-15
Date Edited:	2021-05-26

Ecology and Life History

Lifeform: annual herb

Blooming Period: May-Jun

Elevation:
180 - 305 meters
590 - 1000 feet

General Habitats:

Chaparral

Microhabitat Details:

Microhabitat:

Notes

Notes: Known from only four occurrences. Possibly threatened by recreational activities. Potentially threatened by radio tower maintenance and associated vegetation management. Not in The Jepson Manual (1993). See Novon 17(4): 454-461 (2007) for original description.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	3
	Total EOs	% of EOs
EOs with Threat Listed:	2	67 %
Recreational use (non-ORV)	2	66%
Wood cutting or brush clearing	1	33%
Other	1	33%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					3
A	B	C	D	X	U
0	0	0	0	0	3

Occurrence Status:
Historical >20 Years	2
Recent <=20 Years	1

Presence:
Presumed Extant	3
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
Contra Costa (CCA), Stanislaus (STA)

Quads: Name (Quad Code)
Clayton (3712188), Crevison Peak (3712122)

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

Click on quad for name. Hold Shift Key to use mouse scroll wheel

CNPS Rare Plant Inventory