CNPS

CNPS Rare Plant Inventory

Species Details

Corethrogyne filaginifolia var. incana

San Diego sand aster

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  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:

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

  Occurrence Data from the CNDDB

Total Occurrences: 23
Element Occurrence Ranks:
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
Click on quad for name. Hold Shift Key to use mouse scroll wheel

  Selected References

Suggested Citation:
California Native Plant Society, Rare Plant Program. 2024. Rare Plant Inventory (online edition, v9.5). Website https://www.rareplants.cnps.org [accessed 20 April 2024].