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Montana Field Guide

Montana Field Guides

Chinese Mustard - Brassica juncea
Other Names:  Brown Mustard, India Mustard, Leaf Mustard, Oriental Mustard, Vegetable Mustard

Non-native Species

Global Rank: GNR
State Rank: SNA

Agency Status
MNPS Threat Rank:
C-value: 1

External Links

General Description
Glabrous to sparsely hairy annual. Stems erect, branched, 20–80 cm. Basal leaves lyrate-pinnate with dentate margins, early deciduous. Stem leaves 4–15 cm long, petiolate below, becoming merely lobed and sessile above. Petals 7–10 mm long. Fruits: the body 2–4 cm long, strongly 2-nerved; the beak 6–10 mm long, conical (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Montana Range


Range Comments
European native now widespread in North America.

Observations in Montana Natural Heritage Program Database
Number of Observations: 31

(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)

Fields, roadsides, disturbed, moist soil; valleys (Lesica 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 rufocinctus, Bombus sitkensis, and Bombus occidentalis (Thorp et al. 1983).


  • Literature Cited AboveLegend:   View Online Publication
    • 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.
  • 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.
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Citation for data on this website:
Chinese Mustard — Brassica juncea.  Montana Field Guide.  .  Retrieved on , from