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

Astragalus lotiflorus Hook.
lotus milk-vetch (lotus milkvetch)
Fabaceae (Pea family)

Introduction to Vascular Plants

© Ryan Batten  Email the photographer   (Photo ID #23767)

E-Flora BC Static Map
Distribution of Astragalus lotiflorus
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Species Information

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Low, short-lived perennial herb from a taproot and branching stem-base, silvery with appressed to spreading, basally 2-forked hairs; stems 1-several or nearly lacking, tufted, decumbent, 1-6 (10) cm long.
Alternate, pinnately compound, 5-11 cm long; leaflets 5 to 15, oblong-elliptic, grey-hairy, 10-20 mm long; stipules lanceolate, 2-5 mm long, not joined.
Inflorescence a short, axillary raceme of 2 to 12 pea-like flowers, the raceme-stalks mostly very short (0.5-2 cm) but sometimes to 8 cm long; corollas yellowish-white, often purple-tinged, 7-10 mm long; calyces white-hairy, a little more than 1/2 the length of the corollas, the narrowly lanceolate teeth nearly as long as the tube.
Pods, oblong-egg-shaped, unstalked, ascending or spreading, 1-2.5 cm long, inflated, densely hairy, rather leathery, somewhat flattened, short-beaked, 1-chambered.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Dry grasslands and slopes in the steppe zone; infrequent in SC and SE BC; E to SK, S to MN, IA, TX and NM.

Source: The Illustrated Flora of British Columbia


Ecological Framework for Astragalus lotiflorus

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) 457 639 857
Slope Gradient (%) 15 51 65
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
100 179 290
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
1 2 3
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(9)


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 not evaluated, unknown or variable.

Synonyms and Alternate Names

Astragalus elatiocarpus Sheldon
Astragalus lotiflorus var. nebraskensis Bates
Astragalus lotiflorus var. reverchonii (A. Gray) M.E. Jones
Astragalus reverchoni Gray
Astragalus reverchonii A. Gray
Batidophaca lotiflorus (Hook.) Rydb.

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References