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

Lotus micranthus Benth.
small-flowered birds-foot trefoil (desert deervetch)
Fabaceae (Pea family)

Introduction to Vascular Plants

© Virginia Skilton  Email the photographer   (Photo ID #13119)

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Distribution of Lotus micranthus
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Species Information

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Annual herb; stems prostrate to erect, 10-30 cm long/tall, slender, glabrous or sparsely appressed-hairy.
Alternate, pinnately compound; leaflets 3 to 6, oblong to elliptic, blunt-tipped, 4-12 mm long, often glaucous; stipules tiny, gland-like.
Inflorescence of single, pea-like flowers on stalks from the leaf axils, the stalks 3-20 mm long, with a 2- to 3-parted bract just below the flower; corollas pale yellow or salmon, reddish-tinged, quickly fading, 4-6 mm long; calyces 2 mm long, hairy, the linear-lanceolate lobes shorter than the tube.
Pods, oblong, 1.5-3 cm long, hairless, wavy-margined, constricted between the 4 to 9 seeds.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Moist to mesic meadows, grassy bluffs, rocky slopes and sandy clearings in the lowland zone; locally frequent in extreme SW BC; S to CA.

Source: The Illustrated Flora of British Columbia


The climate type for this species, as reported in the: "British Columbia plant species codes and selected attributes. Version 6 Database" (Meidinger et al. 2008), is cool mesothermal.

Synonyms and Alternate Names

Hosackia parviflora Benth.

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References