Stems glabrous; tendrils unbranched, less commonly 2-branched. Leaves 3-or 5-foliolate, lateral pair of leaflets completely or nearly completely divided to base, petiolules 1–4 mm, terminal leaflet 3–5 cm, blade lanceolate to broadly lanceolate or elliptic-lanceolate, petiolule 5–10 mm, linear, abruptly broadening into leaflet base, leaflet margins coarsely serrate to shallowly lobed; petioles 5–10 mm. Staminate inflorescences 1.5–10.5 cm, floriferous portion 0.2–2.2 cm, 7–26-flowered, racemoid, without lateral branches; flowers solitary or in fascicles of 2–3. Staminate corollas 2.5–2.8 mm diam. Anther heads 0.6–0.8 mm diam., subsessile, glabrous. Fruiting peduncles 2–6 mm. Capsules narrowly ovoid, slightly oblique, short-beaked, 12–25 mm, spinules 2–4[–6] mm.
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