Taxon Details

Corethrogyne filaginifolia var. incana

San Diego sand aster

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Taxon Summary:

Corethrogyne filaginifolia var. incana, commonly known as San Diego sand aster, is a perennial herb in the Asteraceae that is found in California and elsewhere. It occurs within Chaparral, Coastal bluff scrub, and Coastal scrub, growing at elevations from 3 to 115 meters. Corethrogyne filaginifolia var. incana is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.

Classification

Scientific Name: Corethrogyne filaginifolia (H. & A.) Nutt. var. incana (Nutt.) Canby
Common Name: San Diego sand aster
Family:	Asteraceae
Element Code:	PDAST2M025
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:	G4T1Q
State Rank:	S1
Other Status:
CRPR Changes:
Add Date:	1980-01-01
Date Edited:	2021-05-26

Ecology and Life History

Lifeform: perennial herb

Blooming Period: Jun-Sep

Elevation:
3 - 115 meters
10 - 375 feet

General Habitats:

Coastal bluff scrub
Chaparral
Coastal scrub

Microhabitat Details:

Microhabitat:

Notes

Notes: Known in CA from fewer than 10 occurrences. Threatened by development and non-native plants. A synonym of Lessingia filaginifolia var. filaginifolia in The Jepson Manual; taxonomic study needed.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	2
	Total EOs	% of EOs
EOs with Threat Listed:	14	61 %
Development	14	60%
Road/trail construction/maint.	1	4%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					23
A	B	C	D	X	U
0	1	0	0	3	19

Occurrence Status:
Historical >20 Years	12
Recent <=20 Years	11

Presence:
Presumed Extant	20
Possibly Extirpated	3
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
Baja California (BA), California (CA)

California Counties and Islands: Name (Code)
San Diego (SDG)

Quads: Name (Quad Code)
Del Mar (3211782), Imperial Beach (3211751), Jamul Mountains (3211668), La Jolla (3211772), National City (3211761), Point Loma (3211762), Potrero (3211655), Poway (3211781), Tecate (3211656)

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