[Domestic Mustards: The Genus Brassica West of the Cascade Mountains of Oregon and Washington]

Black Mustard

Brassica nigra

Synonym: Sinapsis nigra

Black Mustard: Brassica nigra (Synonym: Sinapsis nigra)

Black mustard beginning to bloom at the trailhead to Upper Table Rock, northwest of Medford, Oregon............April 28, 2012.

Lower stem leaf of Black Mustard: Brassica nigra (Synonym: Sinapsis nigra)

A stem leaf of black mustard as seen at the trailhead to Upper Table Rock, northwest of Medford, Oregon............April 28, 2012.
Paul Slichter