Petals of eruca vesicaria
are obovate in shape, tapering evenly to the base, up to one inch long, pale creamy-yellow crossed by distinctive, branched reddish-brown veins. Sepals are reddish-green, unfused, in two pairs (inner and outer), hairless or sparsely hairy. Two of the six stamens are shorter than the others. Filaments are reddish, the anthers pale greenish-yellow, and exserted. Fruits are short, upwards-pointing cylinders, of two lateral valves and a narrower, flattened segment at the tip.
The hairless, dark green leaves grow mostly at the base and along the lower half of the stem branches; they are pinnatisect, divided almost to the midrib into between three and nine lobes, irregularly wavy-toothed.