Perennial to 1 m, roots 1 or 2, fleshy. Leaves dead or dying at flowering, triternate, leaflets lanceolate to narrowly linear. Inflorescence with reduced sheath-like bracts at nodes, peduncle few branched with up to 3 lateral umbels, involucel bracts 1.5-2.0 mm long, terminal umbel 4-7-rayed, rays suberect to spreading. Flowers yellow, sepals acute to tridentate, petals with resin duct notably branched near base. Fruit narrowly obovate, 7-9 mm long, mericarps slightly dorsally compressed, marginally winged, dorsally prominently ribbed, homomorphic or slightly heteromorphic, vittae present, rib oil ducts inconspicuous.