Search Field Guide
Advanced Search
MT Gov Logo
Montana Field Guide

Montana Field Guides

Black Mustard - Brassica nigra

Non-native Species

Global Rank: GNR
State Rank: SNA

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 1

External Links






 
General Description
Annual. Stems erect, branched above, 40–100 cm. Basal leaves lyrate-pinnate to lobed with dentate margins, early deciduous. Stem leaves reduced above, becoming ovate. Vestiture hirsute below to glabrous. Petals 6–9 mm long. Fruits: strictly erect; the body 8–15 mm long, strongly 2-nerved and angled; the beak 1–3 cm long, conical; pedicel ca. 2 mm long (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Range Comments
Weedy across North America.

Observations in Montana Natural Heritage Program Database
Number of Observations: 1

(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

References
Login Logout
Citation for data on this website:
Black Mustard — Brassica nigra.  Montana Field Guide.  .  Retrieved on , from