Torilis nodosa is a species of flowering plant in the parsley family known by the common names knotted hedge parsley. It is native to parts of Europe, especially the Mediterranean Basin and it is known elsewhere, such as North America, as an introduced species and a common weed. It grows in many types of habitat, particularly disturbed areas. It is an annual herb producing a hairy stem up to half a meter in maximum height. The alternately arranged leaves are each divided into several pairs of smooth-edged lance-shaped or linear leaflets. The inflorescence is a dense compound umbel of flower clusters on very short rays, often appearing like a cluster. Each flower has five petals which are unequal in size and are white with a pinkish or reddish tinge. Each greenish or pinkish fruit is about 3 millimeters long and is coated in long prickles.