White Mustard

(Sinapis alba)

 

Color Photograph: Wikimedia, GNU Free Documentation License, Photographer Unknown

Line Drawing: Britton, N.L., and A. Brown. 1913. An Illustrated Flora of the Northern United States and Canada, Second Edition.

 

White Mustard (Sinapis alba)

Alien: Native of Europe.

Identification: Flowers yellow, relatively large, in terminal clusters. Seed pods bristly, short, constricted in the middle, and with a long, flat apical beak. Leaves with an irregular, apical lobe and 2 or more pairs of opposite, but irregular lobes. Plant 1 to 2 feet in height.

Distribution: Throughout North America.

Habitat: White Mustard is a weedy species of disturbed habitats such as fields, empty lots, and roadsides.

Flowering Period: June to August.

Comments: The name White Mustard refers to the color of the ground seeds, not the flowers.

White Mustard (Sinapis alba)

Similar Species:

 The bristly seed pods, constricted in the middle, and with a long, flat apical beak readily identify this species.

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