Taxon Details

Erigeron serpentinus

serpentine daisy

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Taxon Summary:

Erigeron serpentinus, commonly known as serpentine daisy, is a perennial herb in the Asteraceae that is found only in California. It occurs within Chaparral (seeps, and serpentinite), growing at elevations from 60 to 670 meters. Erigeron serpentinus is ranked 1B.3, Plants Rare, Threatened or Endangered in California and Elsewhere; Not very threatened in California.

Classification

Scientific Name: Erigeron serpentinus G. Nesom
Common Name: serpentine daisy
Family:	Asteraceae
Element Code:	PDAST3M5M0
USDA Plants Symbol:	ERSE8
Synonyms/Other Names:
Name Status:	JEF, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	1B.3
Fed List:	None
State List:	None
Global Rank:	G2
State Rank:	S1
Other Status:	BLM_S; SB_CalBG/RSABG
CRPR Changes:
Add Date:	1994-01-01
Date Edited:	2024-08-06

Ecology and Life History

Lifeform: perennial herb

Blooming Period: May-Aug

Elevation:
60 - 670 meters
195 - 2200 feet

General Habitats:

Chaparral (seeps, serpentinite)

Microhabitat Details:

Microhabitat:

Notes

Notes: Known only from The Cedars and along Porter Creek. Possibly threatened by grazing and non-native plants. Similar to E. angustatus. See Phytologia 72(3):157-208 (1992) for original description.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	6
	Total EOs	% of EOs
EOs with Threat Listed:	4	67 %
Grazing	4	66%
Feral pigs	3	50%
Non-native plant impacts	3	50%
Other	2	33%
Foot traffic/trampling	2	33%
Mining	1	16%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					6
A	B	C	D	X	U
2	1	2	0	0	1

Occurrence Status:
Historical >20 Years	2
Recent <=20 Years	4

Presence:
Presumed Extant	6
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
Sonoma (SON)

Quads: Name (Quad Code)
Arched Rock (3812342), Cazadero (3812351), Duncans Mills (3812341), Fort Ross (3812352), Guerneville (3812258)

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