Taxon Report

Acmispon rubriflorus (Sharsm.) D.D. Sokoloff

red-flowered bird's-foot trefoil

Print Report

© 2011 Dean Wm. Taylor, Ph.D.

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

Ecology and Life History


Lifeform:	annual herb
Blooming Period: Apr-Jun	Apr-Jun
Elevation:	200-425 (655-1395)
General Habitats:	Cismontane woodland, Valley and foothill grassland
Microhabitat:
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	1B.1
Global Rank:	G2
State Rank:	S2
State List:	None
Fed List:	None
Other Status:	BLM_S
CRPR Changes:

Occurrence Data from the CNDDB


Total Occurrences:	8
Element Occurrence Ranks:
Excellent (A)	0
Good (B)	1
Fair (C)	1
Poor (D)	0
None (X)	0
Unknown (U)	6

Location


California Endemic: True
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)

Threat List Data from the CNDDB


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

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:

Selected References

Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 1 January 2025].