Taxon Details

Acmispon argophyllus var. adsurgens

San Clemente Island bird's-foot trefoil

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Photo of Acmispon argophyllus var. adsurgens

Taxon Summary:

Acmispon argophyllus var. adsurgens, commonly known as San Clemente Island bird's-foot trefoil, is a perennial herb in the Fabaceae that is found only in California. It occurs within Coastal bluff scrub, and Coastal scrub, growing at elevations from 15 to 395 meters. Acmispon argophyllus var. adsurgens is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.

Classification

Scientific Name: Acmispon argophyllus (A. Gray) Brouillet var. adsurgens (Dunkle) Brouillet
Common Name: San Clemente Island bird's-foot trefoil
Family:	Fabaceae
Element Code:	PDFAB2A041
USDA Plants Symbol:
Synonyms/Other Names: Lotus argophyllus var. adsurgens
Name Status:	JEF, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	1B.1
Fed List:	None
State List:	CE (1979-11-01)
Global Rank:	G5T2
State Rank:	S2
Other Status:	SB_CalBG/RSABG; SB_CRES
CRPR Changes:
Add Date:	1974-01-01
Date Edited:	2022-12-06

Ecology and Life History

Lifeform: perennial herb

Blooming Period: Apr-Jun

Elevation:
15 - 395 meters
50 - 1295 feet

General Habitats:

Coastal bluff scrub
Coastal scrub

Microhabitat Details:

Microhabitat:

Rocky

Notes

Notes: Threatened by Navy activities. Feral herbivores removed from SCM Isl., and vegetation recovering. See Bulletin of the Southern California Academy of Sciences 39:175 (1940) for original description.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	0
	Total EOs	% of EOs
EOs with Threat Listed:	0	%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					20
A	B	C	D	X	U
0	0	0	0	0	20

Occurrence Status:
Historical >20 Years	8
Recent <=20 Years	12

Presence:
Presumed Extant	20
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
Los Angeles (LAX)

Quads: Name (Quad Code)
San Clemente Island Central (3211874), San Clemente Island North (3211885), San Clemente Island South (3211873)

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