Short to medium, much branched, yellow green, foetid plant. Stems hairless, or bristly below. Leaves mostly in a basal rosette, elliptical, toothed or lobed, long stalked. Flowers four petalled, and sulphur yellow, 10 to 15 mm. Seed capsule is 18 to 45 mm long and ascending.

Glabrous or sparsely hairy; leaves mostly in basal rosette, lobed

General photo of flowering plant in habitat

Rocky and dry places, walls, quarries etc.

June to September.

Usually annual.

Fairly widespread in Britain, but scarce in many parts of the north and west.

Not common in Leicestershire + Rutland. In the 1979 Flora survey of Leicestershire it was found in 24 of the 617 tetrads.

In the current Checklist (Jeeves, 2011) it is listed as Alien (casual); rare