Strong dioecious, woody climber, to 5 m high. Leaves flammuliform, triternate or incompletely quadriternate, with 18–36 or more leaflets or leaflet-segments; leaflets oblanceolate to obovate, often deeply 3-lobed, entire, often recurved at margin, acute to obtuse, mucronate to emarginate, glabrescent; terminal leaflet 5–15 (–25) mm long, 1–3 mm wide. Flowers in few–many-flowered dichasial panicles. Tepals narrow-ovate to oblong, 1.2–2 cm long, creamy white, short-pubescent below, glabrous above. Stamens 2–6 mm long; filaments glabrous, white; anthers broadly elliptic, 0.4–1 mm long, without appendage; staminodes present. Achenes compressed-ovoid, 3.5–5 mm long, 2–3 mm wide, glabrous; margin prominent, corky; awn 1.8–3 cm long.
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