Plants annual, hispid. Leaves 1-2-pinnate; segments linear to lanceolate or oval. Umbels terminal and lateral, pedunculate or sessile. Involucre of linear bracts or lacking. Flowers white to light purple. Fruit 2-6 mm long, prickly; primary ridges filiform; secondary ridges hidden by the spines which occupy the whole interval between the primary ridges; vittae solitary under the second¬ary ridges; commissure 2-vittate. Inner seed face concave to sulcate.