Taxon Details

Acmispon rubriflorus

red-flowered bird's-foot trefoil

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Taxon Summary:

Acmispon rubriflorus, commonly known as red-flowered bird's-foot trefoil, is a annual herb in the Fabaceae that is found only in California. It occurs within Cismontane woodland, and Valley and foothill grassland, growing at elevations from 200 to 425 meters. Acmispon rubriflorus is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.

Classification

Scientific Name: Acmispon rubriflorus (Sharsm.) D.D. Sokoloff
Common Name: red-flowered bird's-foot trefoil
Family:	Fabaceae
Element Code:	PDFAB2A150
USDA Plants Symbol:
Synonyms/Other Names: Lotus rubriflorus
Name Status:	JEF, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	1B.1
Fed List:	None
State List:	None
Global Rank:	G2
State Rank:	S2
Other Status:	BLM_S
CRPR Changes:
Add Date:	1974-01-01
Date Edited:	2024-11-05

Ecology and Life History

Lifeform: annual herb

Blooming Period: Apr-Jun

Elevation:
200 - 425 meters
655 - 1395 feet

General Habitats:

Cismontane woodland
Valley and foothill grassland

Microhabitat Details:

Microhabitat:

Notes

Notes: Needs field work. See Madroño 6(2):56 (1941) for original description.
Threats: Threatened by development. Possibly threatened by grazing and non-native plants.
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	4
	Total EOs	% of EOs
EOs with Threat Listed:	3	38 %
Development	1	12%
Grazing	1	12%
ORV activity	1	12%
Other	1	12%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					8
A	B	C	D	X	U
0	1	1	0	0	6

Occurrence Status:
Historical >20 Years	8
Recent <=20 Years	0

Presence:
Presumed Extant	8
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
Colusa (COL), Stanislaus (STA), Tehama (TEH)

Quads: Name (Quad Code)
Copper Mtn. (3712143), Dales (4012231), Gilmore Peak (3912235), Hall Ridge (3912276), Leesville (3912224), Lodoga (3912234), Mt. Boardman (3712144), Newville (3912275)

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