Shrubs, to 5 m tall, andromonoecious. Branches with dense, compressed prickles 3-6 mm, ferruginous stellate. Leaves simple, 9-11-lobed; petiole 20-40 cm, densely prickly; blade broadly orbicular, 20-36 cm wide, leathery, lobes divided 3/4-4/5 way to base, oblong-lanceolate to narrowly ovate, both surfaces glabrous, or abaxially sparsely hispidulous, base deeply cordate, margin spinose-serrulate, teeth ca. 2 mm, with a stiff, sharp tip, apex acuminate. Inflorescence terminal, probably erect, with dense prickles and brown stellate indumentum; primary axis ca. 30 cm; secondary axes 15(-20) cm, with a terminal umbel of bisexual flowers and 1 to several lateral umbels of male flowers; peduncles 5-7 cm; umbels 3-5 cm in diam.; pedicels 1-1.5 cm, densely ferruginous tomentose. Ovary 2-carpellate. Fruit globose to obloid, slightly compressed, 6-7 × 8-9 mm; styles persistent, ca. 2 mm; pedicels in fruit ca. 7 cm. Fl. Jun-Dec, fr. Jan-Feb.
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