White tinted with green.
Flowers: small; clustered. Calyx: of four sepals that fall early. Corolla: of four cruciferous petals. Stamens: six, two of which are shorter than the others. Pistil: one. Leaves: numerous; saggitate. Stem: quite tall; erect; rough. Pods: linear.
Another little flower that is readily recognised as one of the mustards. It is not as luxurious in its taste as the preceding species and is content with the less rich soil of rocky places and hillsides.