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Montana Field Guide

Montana Field Guides

Bourgeau's Milkvetch - Astragalus bourgovii


Global Rank: G4G5
State Rank: S4S5

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value:

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General Description
Perennial with a branched caudex. Herbage strigose. Stems 5–30 cm, erect to ascending. Leaves with 13 to 23 lanceolate leaflets 5–12 mm long; stipules deltoid, 1–3 mm long, basally connate. Inflorescence longer than the leaves, open with 5 to 10 ascending flowers. Flowers purple; calyx black-strigose; sepals 1–3 mm long; banner 8–11 mm long, reflexed; keel 7–9 mm long. Legume ascending to pendent, black-strigillose, flattened, keeled on the sides, 10–18 mm long, narrowly elliptic (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Present
 


Range Comments
Endemic to southern BC, AB, adjacent ID and MT (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 7

(Click on the following maps and charts to see full sized version) Map Help and Descriptions
Relative Density

Recency

 

(Observations spanning multiple months or years are excluded from time charts)



Habitat
Stony soil of meadows, moraine, grasslands, fellfields, open forest; subalpine, alpine (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
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Citation for data on this website:
Bourgeau's Milkvetch — Astragalus bourgovii.  Montana Field Guide.  .  Retrieved on , from