Perennial. Leaves 1-2-pinnate; segments short, linear. Stem reduced. Peduncle present or lacking. Involucre of pinnate bracts. Rays numerous. Involucel of many pinnate bractlets. Calyx teeth prominent or not prominent. Fruit ovate to oblong; ridges prominent, not winged; furrows 3-4-vittate; com¬missure 8-vittate. Inner seed face slightly concave.