(named from St. Barbara, and called the Herb of St. Barbara)

Family, Mustard. Color, yellow. Flowers, in terminal, long racemes, pods below, blossoms above. Pod, linear, round, or somewhat 4-sided. Leaves, the lower lyrate, having a large, terminal lobe; the upper deeply cut at base, rounded at apex. Smooth perennial.

Roadsides and wet ground East and West.