Stems: erect, branching below. Leaves: spatulate, the lower obtuse, sharply dentate, the upper smaller and narrower, acute. Flowers: on ascending pedicels. Fruit: pods terete, glabrous, linear.
This plant closely resembles the Tansy Mustards. It has white, rarely pinkish flowers, and a basal rosette of coarsely toothed leaves, the upper leaves being narrow and even-margined.