Astragalus sclerocarpus A. Gray
The Dalles milk-vetch (woodypod milkvetch)
Fabaceae (Pea family)

Introduction to Vascular Plants


© Ryan Batten     (Photo ID #23768)


E-Flora BC Static Map

Distribution of Astragalus sclerocarpus
Click here to view the full interactive map and legend

Species Information

Perennial herb from a long, woody taproot and short-branching stem-base; stems decumbent to ascending, 20-50 cm long/tall, several, branched, leafless at the base, sparsely to densely appressed-hairy.
Alternate, pinnately compound, 5-13 cm long, short-stalked; leaflets (7) 15 to 21, linear to oblong, 15-25 mm long, short-appressed-hairy beneath, nearly glabrous above; stipules triangular, rusty, 2-4 mm long, above-ground ones not joined, subterranean ones mostly with bases running down the stem, but sometimes joined.
Inflorescence an axillary raceme of 7 to 25 spreading-ascending, pea-like flowers, the racemes 3-7 cm long, their stalks to 9 cm long, from shorter than to as long as the leaves; corollas white to greenish-white with purplish tips, 10-14 mm long, the banner slightly longer than the wings, which are about 1 mm longer than the rounded keel; calyces 5-7 mm long, grey to black appressed-hairy, the triangular teeth 1/2 as long as the tube.
Pods, ellipsoid, 2-3 cm long, drooping on slender stalks 1.5-2 cm long, grey-appressed-hairy to almost glabrous, fleshy and filled with stringy fibres, leathery when dry, curving to a semi-circle and often purplish-mottled at maturity, 1-chambered.

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 Astragalus sclerocarpus

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)
350 340 360
Slope Gradient (%)
36 12 60

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

158 138 180
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
2 2 2
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(1), PP(1)

Habitat and Range

Dry sandy banks and terraces in the steppe and lower montane zones; rare in SC BC; S to WA and NE OR.

SourceThe Illustrated Flora of British Columbia