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Montana Field Guides

Field Mustard - Brassica rapa
Other Names:  Bird's Rape, Brassica campestris

Non-native Species

Global Rank: GNR
State Rank: SNA

Agency Status
USFWS:
USFS:
BLM:
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.

Observations in Montana Natural Heritage Program Database
Number of Observations: 10

(Click on the following maps and charts to see full sized version) Map Help and Descriptions
Relative Density

Recency

 

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



Habitat

Ecology
POLLINATORS
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).

Management

References
  • 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?
    • Jones, W. W. 1901. Preliminary flora of Gallatin County. M.S. Thesis. Bozeman, MT: Montana State College. 78 pp.
    • 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:
Field Mustard — Brassica rapa.  Montana Field Guide.  .  Retrieved on , from