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Leaf blades 3–13 × 1.5–6 cm, elliptic-ovate to oblong-oblanceolate, rounded, obtuse, acute or acuminate at the apex, rounded or cordulate at the base, coarsely and shallowly crenate or crenate-serrate on the margins, soft to thinly chartaceous, obscurely 3-nerved from the base or almost penninerved, somewhat bullate, often with 2 or more small glands beneath at or towards the base, pubescent and/or hirsute along the midrib and main nerves on both surfaces, otherwise ± glabrous, dark green above, paler beneath.
Female flowers solitary, sessile; sepals 4–6, 2–3 mm long, lanceolate, acute, puberulous, greenish; ovary 1.5 × 1.5 mm, subglobose, verrucose, densely pubescent; styles 3–4, up to 2 cm long, united at the base, filiform, ± smooth or slightly papillose, crimson.
Male flowers in dense bracteate clusters, pedicellate; buds 1 mm long, subglobose, pubescent; sepals 2–4, ovate-suborbicular, pale yellowish-green; stamens 7–8, the united filaments forming a basal plate; pistillode absent.
Female inflorescences up to 8 cm long, but not usually more than 5 cm long, usually terminal, spicate, few-flowered, lax; bracts slightly larger than in the male inflorescences, biglandular at the base.
Male inflorescences up to 15 cm long, terminal or lateral, developing with the leaves, racemose or subpaniculate; bracts 2–5 mm long, linear-lanceolate to linear-setaceous, arcuate.
A ± erect or straggling, usually lax-branched shrub 2–3(6) m tall, monoecious or dioecious, with male and female flowers on the same or different inflorescences.
Fruits 4–6 × 6–8 mm, 3-lobed, covered with conical warts in the upper half, otherwise smooth, pubescent, grey-green or yellow-green.
Seeds 4 × 3 mm, ovoid-subglobose, shallowly tuberculate and lineate-rugulose, shiny, yellowish-brown.
Young shoots and petioles evenly to densely puberulous and often also hirsute.
Buds perulate (furnished with protective scales), ovoid, chestnut-brown.
Stipules 3–10 mm long, filiform-setaceous to linear.
Stipels 1–4 mm long, filiform-setaceous.
Petioles 0.2–6 cm long.
Bark brown.
