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Montana Field Guide

Montana Field Guides

Bessey's Locoweed - Oxytropis besseyi var. ventosa

Status Under Review
Undetermined Origin

Global Rank: G5T3?
State Rank: SU

Agency Status
MNPS Threat Rank:

External Links

General Description
See species description.

Diagnostic Characteristics
Barneby (1989, Interm. Fl. Vol. 3, part B) uses the following characters to distinguish variety ventosa from the others: Larger leaves 2-8 mm long and shorter than the scapes; leaflets 5-9(-11), crowded on a rachis less than 2 cm long; pod tumescent; leaflets of mature leaves 9-25 mm long.

Species Range

Range Comments
Southwestern MT, much of central WY, and (uncommonly) in Daggett County, UT (Kartesz 2009).

Observations in Montana Natural Heritage Program Database
Number of Observations: 22

(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)

Gernally on sandstone or tuff (Barneby 1989).

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Citation for data on this website:
Bessey's Locoweed — Oxytropis besseyi var. ventosa.  Montana Field Guide.  .  Retrieved on , from