Herbs perennial. Tuber globose. Stem ribbed, simple or branched, softly pilose, tapering below soil level and easily broken from the tuber. Leaves 2–4-ternate-pinnate/pinnatisect. Bracts absent or caducous; rays conspicuously unequal; bracteoles 5. Calyx teeth obsolete. Petals obovate, notched with inflexed apex, outer petals slightly enlarged (radiate). Stylopodium short-conic; styles recurved, 3 times as long as stylopodium, caducous. Fruit ovoid-oblong, slightly flattened laterally, smooth, apex constricted; ribs prominent, protruding; vittae 1 per broad furrow, 2 on commissure. Seed slightly laterally flattened, face deeply sulcate.
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