Herbs, perennial. Root turnip-shaped or fusiform, woody. Stem single, rarely 2, erect, profusely branched, base clothed with fibrous remnant sheaths. Basal leaves petiolate; blade oblong-ovate, 1–3-pinnate. Upper leaves reduced, 1-pinnate or 3-lobed, sessile on expanded sheaths. Umbels compound, terminal and lateral; bracts 5, margins broad membranous; rays unequal; bracteoles 5, similar to bracts. Calyx teeth obsolete. Petals white, obovate, base cuneate, apex notched with small incurved lobule. Stylopodium conic; styles ca. equal to stylopodium, divergent or reflexed. Fruit oblong-ovoid, somewhat dorsally compressed, commissure broad; ribs filiform or scabridulous; vittae solitary or 3–4 in each furrow, 2 or 6–10 on commissure. Seed face plane or slightly convex. Carpophore 2-cleft to base.
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