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Montana Field Guide

Montana Field Guides

Loose-flower Milkvetch - Astragalus tenellus


Global Rank: G5
State Rank: S4

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

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General Description
Perennial from a spreading, branched caudex. Herbage glabrate to strigillose. Stems ascending, 15–40 cm. Leaves with 11 to 21 linear to oblanceolate leaflets, 6–15 mm long with rounded tips; stipules connate, 3–6 mm long. Inflorescence ca. as long as the leaves, open, of 7 to 20 spreading flowers. Flowers ochroleucus; calyx sparsely black and/or white-strigose; sepals ca. 1 mm long; banner 6–10 mm long, reflexed; keel 5–7 mm long, sometimes purple-tipped. Legume pendent on a stipe 2–3 mm long, narrowly elliptic, 7–15 mm long, flattened, glabrous, purple-mottled (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Our plants are variety tenellus.

Species Range
Present
 


Range Comments
YT south to NV, NM, NE and MN (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 11

(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
Often sandy or gravelly soil of grasslands, sagebrush steppe, badlands, river banks; plains, valleys (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
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Citation for data on this website:
Loose-flower Milkvetch — Astragalus tenellus.  Montana Field Guide.  .  Retrieved on , from