Trees, to ca. 10 m tall, hermaphroditic. Branches with conic prickles 2-3 mm, densely ferruginous tomentose when young. Leaves simple, deeply 3-5-lobed; petiole 35-45 cm, unarmed, tomentose at first, later glabrescent; blade broadly orbicular, 15-26 × 18-30 cm, papery; lobes divided to 4/5 way to base, basal lobes oblique-oblong, sometimes slightly shallow, median and terminal lobes obovate-oblong to obovate-lanceolate, both surfaces densely yellowish gray stellate pubescent when young, later glabrescent, abaxially sparsely stellate pubescent on veins, adaxially glabrous, base slightly narrowed, margin sparsely irregularly serrate, apex acuminate. Inflorescence lateral, apparently ascending (perhaps pendent in fruit), sparsely stellate, with scattered prickles; primary axis to 35 cm; secondary axes to 8 cm; peduncles 1-2.5 cm; umbels 0.8-1.6 cm in diam.; pedicels 2-5 mm. Ovary 2-carpellate. Fruit globose, ca. 3 mm in diam.; styles persistent, ca. 2 mm; pedicels in fruit 4-6 mm, pubescent. Fr. Oct.
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