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Montana Field Guide

Montana Field Guides

Mountain Peppergrass - Lepidium montanum

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Status Under Review
Native Species

Global Rank: G5?
State Rank: SU

Agency Status


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General Description
Taprooted biennial or short-lived perennial. Stems prostrate to ascending, branched, 10–20 cm. Basal leaves 3–10 cm long, petiolate, the blade lanceolate, pinnately lobed with dentate margins. Stem leaves similar, reduced upward. Vestiture of short, thick hairs. Flowers white; petals 2–3 mm long; stamens 6. Fruit ovate, glabrous, 2–4 mm long, notched; style 0.2–0.7 mm long; pedicels glabrous, spreading, 3–8 mm long. Our plants are var. montanum (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Range Comments
In Beaverhead County; OR to MT south to CA, AZ and NM (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 1

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Relative Density



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


  • Literature Cited AboveLegend:   View Online Publication
    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
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Citation for data on this website:
Mountain Peppergrass — Lepidium montanum.  Montana Field Guide.  .  Retrieved on , from