Western Sweet-vetch - Hedysarum occidentale
MNPS Threat Rank
Stems erect, 20–80 cm. Herbage sparsely strigillose. Leaves with 9 to 21 lanceolate to ovate leaflets 1–3 cm long with rounded tips; stipules 5–25 mm long. Flowers deep pink to purple; calyx tube 2–3 mm long, strigose; sepals deltoid to linear, unequal; keel 15–20 mm long. Loment sparsely strigose with 1 to 4 reticulate segments, 6–10 mm wide (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX)
WA to MT south to ID, WY and CO (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).
Observations in Montana Natural Heritage Program Database
Number of Observations:
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(Observations spanning multiple months or years are excluded from time charts)
The following animal species have been reported as pollinators of this plant species or its genus where their geographic ranges overlap: Bombus frigidus
(Williams et al. 2014).
- Literature Cited AboveLegend: View Online Publication
- Williams, P., R. Thorp, L. Richardson, and S. Colla. 2014. Bumble Bees of North America. Princeton, NJ. Princeton University Press.
- Additional ReferencesLegend: View Online Publication
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- Johnson, T. W. 1982. An analysis of pack and saddle stock grazing areas in the Bob Marshall Wilderness. M.Sc.Thesis. Bozeman, MT: Montana State University. 105 p.
- Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.