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Montana Field Guide

Montana Field Guides

Pale Vetchling Peavine - Lathyrus ochroleucus

Native Species

Global Rank: G5
State Rank: SNR
C-value: 4

Agency Status


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General Description
Rhizomatous. Stems ascending or climbing, 30–80 cm. Leaves with 4 to 8 elliptic leaflets 2–6 cm long; rachis prolonged into a tendril; stipules ovate, entire, 2–3 cm long. Flowers ochroleucus; calyx tube 3–5 mm long, glabrous; sepals ciliate, 1–5 mm long, the upper shorter, broader; banner 10–17 mm long. Legume 3–5 cm long (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range

Range Comments
AK to QC south to WA, WY, NE, OH and PA (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 240

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



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

Thickets, meadows, moist, open forest especially aspen; valleys, montane (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

The following animal species have been reported as pollinators of this plant species or its genus where their geographic ranges overlap: Bombus appositus, Bombus fervidus, Bombus flavifrons, Bombus sitkensis, and Bombus occidentalis (Thorp et al. 1983, Colla and Dumesh 2010, Koch et al. 2012).

  • Literature Cited AboveLegend:   View Online Publication
    • Colla, S.R. and S. Dumesh. 2010. The bumble bees of southern Ontario: notes on natural history and distribution. Journal of the Entomological Society of Ontario 141:39-68.
    • Koch, J., J. Strange, and P. Williams. 2012. Bumble bees of the western United States. Washington, DC: USDA Forest Service, Pollinator Partnership. 143 p.
    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
    • Thorp, R.W., D.S. Horning, and L.L. Dunning. 1983. Bumble bees and cuckoo bumble bees of California (Hymenoptera: Apidae). Bulletin of the California Insect Survey 23:1-79.
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Citation for data on this website:
Pale Vetchling Peavine — Lathyrus ochroleucus.  Montana Field Guide.  .  Retrieved on , from