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Montana Field Guide

Montana Field Guides

Flaxleaf Plainsmustard - Schoenocrambe linifolia
Other Names:  Sisymbrium linifolium, Hesperidanthus linearifolius, Thelypodiopsis linearifolia

Global Rank: G5
State Rank: SNR

Agency Status
MNPS Threat Rank:

External Links

General Description
Glabrous, rhizomatous perennial. Stems erect, branched, 20–70 cm from a branched caudex. Leaves all cauline, sessile, linear, 25–60 mm long, entire, inrolled. Inflorescence an ebracteate raceme. Flowers yellow; petals 6–10 mm long. Fruits linear siliques, 2–6 cm long; style up to 1 mm long; seeds in 1 row per locule; pedicels ascending, 4–6 mm long (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range

Range Comments
BC to OR, MT, WY to NV, UT and NM. East of the Cascades.

Summary of Observations Submitted for Montana
Number of Observations: 8

(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)


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Citation for data on this website:
Flaxleaf Plainsmustard — Schoenocrambe linifolia.  Montana Field Guide.  .  Retrieved on , from