Pleurospermum Hoffm., Gen. Umb. 1: 29. 1814. C.B. Clarke in Hook. f., Fl. Brit. Ind. 2:702. 1879; Hiroe, Umb. Asia 1: 117 1958.
Perennial. Leaves 1-4-pinnate. Involucre of divided or entire white margin¬ed bracts. Rays few to many. Involucel of many lanceolate, oval or oblong white margined bractlets, entire or divided. Calyx teeth evident or obsolete. Petals white or light rose coloured. Fruit ellipsoid to oblong, winged; fruit wall usually spongy, papillate or smooth; ridges winged; furrows 1-3-vittate; commissure 2-6-vittate. Inner seed face concave to grooved.
A European, Central Asiatic and Himalayan genus with 30 species. It is well represented in the Himalayas. The plants can be recognized by their broad, white margined bracts and bractlets.