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Montana Field Guide

Montana Field Guides

Field Mustard - Brassica rapa
Other Names:  Brassica campestris

Exotic Species (not native to Montana)

Global Rank: GNR
State Rank: SNA

Agency Status
MNPS Threat Rank:
C-value: 1

External Links

General Description
Mostly glabrous and glaucous annual. Stems erect, branched above, 30–100 cm. Basal leaves lyrate-pinnate with 2–6 lateral lobes and sinuate margins, early deciduous. Stem leaves lanceolate with entire margins, 3–10 cm long, becoming sessile, auriculate clasping. Petals 7–13 mm long. Fruits: the body 3–6 cm long, strongly 2-nerved; the beak 10–15 mm long, conical (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Range Comments
The species is weedy throughout North America.


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Citation for data on this website:
Field Mustard — Brassica rapa.  Montana Field Guide.  .  Retrieved on , from