E-Flora BC: Electronic Atlas of the Flora of British Columbia

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

Introduction to Vascular Plants

© Paul Handford  Email the photographer   (Photo ID #72756)

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Distribution of Acmispon denticulatus
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Species Information

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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.

Source: The Illustrated Flora of British Columbia

Habitat / 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.

Source: The Illustrated Flora of British Columbia


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) 411 690 933
Slope Gradient (%) 0 25 70
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
30 143 260
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
1 3 7
Modal Nutrient Regime
Number 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)

Synonyms and Alternate Names

Lotus denticulatus (E. Drew) Greene

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References