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Montana Field Guide

Montana Field Guides

African Adder's-mouth - Malcolmia africana
Other Names:  African Mustard, Strigosella africana

Non-native Species

Global Rank: GNR
State Rank: SNA

Agency Status
MNPS Threat Rank:
C-value: 0

External Links

General Description
Annual. Stems 5–30 cm, often branched. Leaves cauline, petiolate; blade lanceolate to oblanceolate, dentate, 4–8 cm long. Vestiture of branched hairs. Inflorescence a raceme, ebracteate above. Flowers pink to rose,; petals 6–10 mm long, clawed. Fruit a straight or slightly curved silique, 4–6 cm long, erect or spreading on pedicels, ca. 1 mm long; seeds in 1 row per locule (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Montana Range


Range Comments
Introduced to much of western North America; native to north Africa (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 40

(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)



  • Additional ReferencesLegend:   View Online Publication
    Do you know of a citation we're missing?
    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
    • Quire, R.L. 2013. The sagebrush steppe of Montana and southeastern Idaho shows evidence of high native plant diversity, stability, and resistance to the detrimental effects of nonnative plant species. M.Sc. Thesis. Bozeman, MT: Montana State University. 124 p.
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Citation for data on this website:
African Adder's-mouth — Malcolmia africana.  Montana Field Guide.  .  Retrieved on , from