Acmispon denticulatus
meadow birds-foot trefoil
Fabaceae (Pea family)

Introduction to Vascular Plants


© Paul Handford     (Photo ID #72756)


E-Flora BC Static Map

Distribution of Acmispon denticulatus
Click here to view the full interactive map and legend

Species Information

Annual herb from a taproot; stems mostly erect or ascending, 10-50 cm tall, few-branched, finely short-hairy.
Alternate, pinnately compound; leaflets 3 or 4, two at the tip of the flattened axis and 1 or 2 on one side, elliptic to egg-shaped, 1-2 cm long, short-hairy, the margins fine-toothed; stipules tiny, gland-like.
Inflorescence of single, nearly stalkless, axillary pea-like flowers; corollas 4-8 mm long, creamy-white with a purplish-tipped banner; calyces short-soft-hairy to glabrous, 3-5 mm long, the linear teeth twice as long as the brown-mottled tube.
Pods, broadly oblong, 8-15 mm long, appressed soft-hairy, not constricted between the seeds; seeds 2 to 4, grey, flattened, 2.5-4 mm long.

SourceThe Illustrated Flora of British Columbia


If more than one illustration is available for a species (e.g., separate illustrations were provided for two subspecies) then links to the separate images will be provided below. Note that individual subspecies or varietal illustrations are not always available.


Ecological Framework for Acmispon denticulatus

The table below shows the species-specific information calculated from
original data (BEC database) provided by the BC Ministry of Forests and Range.
(Updated August, 2013)

Site Information
Value / Class




Elevation (metres)
690 411 933
Slope Gradient (%)
25 0 70

Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]

143 30 260
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
3 1 7
Modal Nutrient Regime
# of field plots
 species was recorded in:
Modal BEC Zone Class

All BEC Zones (# of stations/zone) species was recorded in

BG(5), CWH(1), ICH(1), IDF(5), PP(3), SBS(1)

Habitat and Range

Mesic open, often sandy meadows, grassy slopes, river bars and lakeshores in the lowland, steppe and lower montane zones; common in BC S of 55degreeN, except absent from the Queen Charlotte Islands, N Vancouver Island and adjacent coast; S to N CA.

SourceThe Illustrated Flora of British Columbia


Synonyms and Alternate Names:
Lotus denticulatus (E. Drew) Greene