Astragalus crassicarpus Nutt.
ground plum (buffalo plum; groundplum milkvetch)
Fabaceae (Pea family)

Introduction to Vascular Plants

Photograph

© Ryan Batten     (Photo ID #52833)


Map

E-Flora BC Static Map

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

SUBTAXA PRESENT IN BC

Astragalus crassicarpus var. paysonii

Species Information

General:
Fleshy perennial herb from a thick taproot and stout, branching stem-base; stems prostrate to ascending, mat-forming, 10-50 cm long, minutely appressed-hairy.
Leaves:
Alternate, pinnately compound; leaflets 13 to 25, oblong to elliptic, often blunt and notched at the tip, 5-20 mm long, fleshy, greenish, appressed-hairy below, glabrous above; stipules lanceolate, 3-8 mm long, not joined.
Flowers:
Inflorescence a loose, axillary raceme of 5 to 20 spreading, pea-like flowers, the raceme-stalks shorter than the leaves; corollas 2-3 cm long, usually white, the keel often purple-tinged, the wings about equal to the banner but much longer than the keel; calyces tubular, black-hairy, about 1/2 as long as the corolla, the teeth lanceolate, about 1/3 the length of the tube.
Fruits:
Pods, ellipsoid to globe-shaped, unstalked, 2-2.5 cm in diameter, glabrous, fleshy and reddish at first, becoming bony and brownish in age, almost completely 2-chambered.

SourceThe Illustrated Flora of British Columbia

Illustration

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.

Ecology

Ecological Framework for Astragalus crassicarpus

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

Avg

Min

Max

Elevation (metres)
1489 1215 2012
Slope Gradient (%)
50 15 68

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

194 170 270
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
Modal Nutrient Regime
Class
# of field plots
 species was recorded in:
10
Modal BEC Zone Class
MS

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

ESSF(3), MS(7)

Habitat and Range

Dry grassy openings in the montane zone; rare in SE BC, known recently only from Alexander Creek, Crowsnest Pass area; E to SK and S to MO, TN, TX, MT, AZ and NM.

SourceThe Illustrated Flora of British Columbia