Diplotaxis muralis

Diplotaxis muralis is a species of flowering plant in the mustard family known by the common name annual wall-rocket. This plant is native to Europe, Asia, and Africa, but it is found throughout the temperate world, where it has naturalized. This is an erect mustardlike plant rarely reaching half a meter in height. It has lobed leaves and its stems are topped with dense inflorescences of yellow, or occasionally light purple, flowers with small oval petals and large anthers. The fruit is a podlike silique two to four centimeters long.

Several cytological and morphological studies have suggested that D. muralis originated from natural hybridization between D. tenuifolia and D. viminea.