Erysimum repandum is a species of Erysimum known by several common names, including spreading wallflower, spreading treacle-mustard, and bushy wallflower.
It is native to Eurasia, but it is known in many other parts of the world as an introduced species and a common roadside weed.
Erysimum repandum is an annual herb growing up to about 0.5 m (1 ft 8 in) high. The leaves at the base of the stem are widely lance-shaped, bumpy or toothed along the edges, and up to 15 cm (5.9 in) long. The leaves farther ...