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攀援藤本;茎枝有细纵棱,小枝干后呈灰褐色,被稀少的毛或脱落后变无毛。叶纸质,卵形、卵状披针形成或椭圆形,长5～11cm,宽2～5cm,顶端短尖或渐尖,基部圆或宽楔形,略不等,叶面具腺鳞,无毛,匍伏枝的叶背常被毛;叶脉5～7条,最上一对离基0.5～3cm从中脉发出,余均基出;叶柄长0.5～1.3cm(图)。雄化序与叶片近等长或略短,总花梗约是叶柄的2倍长;花序轴被毛;苞片近圆形,直径约1mm,盾状,具短柄,柄长0.2～0.5cm,被柔毛;雄蕊3枚。雌花序长1.5～3cm,总花梗和苞片与雄花序
Climbing vines; stems with fine longitudinal ribs, twigs grayish brown, thin hairs or hairless after shedding. Leaves papery, ovate, ovate-lanceolate or elliptic, 5–11 cm long, 2–5 cm wide, apically short or acuminate, base rounded or broadly cuneate, slightly unequal, leaf mask glandular scales, glabrous The leaves of the axils are often covered with hairs; veins 5-7, and the uppermost pair of 0.5-3 cm from the base are sent out from the midrib, and the remainder is base out; petiole length 0.5-1.3 cm (Figure). The male and female leaves are nearly as long as or slightly shorter. The total pedicel is about twice as long as the petiole; the inflorescence axis is covered with hairs; the sepals are nearly circular, about 1 mm in diameter, shield-shaped, with a short handle, and the stem length is 0.2-0.5 cm , pubescent; 3 stamens. Female inflorescence 1.5–3 cm in length, total pedicels, sepals and male inflorescence