Subshrubs, climbing and twining, to 10 m tall. Stem slender, appressed puberulent when young, glabrescent. Stipules lanceolate, 4-5[-10] mm; petiole [2-]5-15 cm, minutely puberulent; leaf blade deeply 3-lobed, 6-17 × 5-15[-20] cm, lobes narrowly ovate, membranous, both surfaces puberulent along veins, base cordate, stipels ovate-lanceolate, 2-3 mm, with 2 or 3 glands at base, margin glandular-serrulate, apex acuminate. Inflorescence solitary; peduncle 4-11 cm; involucral bracts leaflike, subequal, broadly ovate, 3-lobed, 3-5.5 × (2-)3-4 cm, yel-lowish, irregularly lobed, minutely puberulent; lower bracteoles broadly ovate, 5-8 mm; upper bract transversely oblong; resiniferous body lamellate, ca. 2 mm high. Male flowers 7-10; pedicel 5-10 mm, sepals 4 or 5(or 6), 2-3 mm, puberulent; staminal column ca. 2 mm; free filaments ca. 0.5 mm; anthers ca. 15, slightly longer. Female flowers: pedicels up to 1.5 mm; sepals pinnatipartite, 3-4 mm, lobes 10-12 on each side, linear, 4-5 mm, setose; ovary puberulent; stylar column cylindric, 10-13 mm; stigma lobes 3. Fruiting pedicel ca. 8 mm; fruiting sepals accrescent to 1.5-2.5 cm, very densely setose; capsule 1-1.4 cm in diam., brownish, puberulent. Seeds globose, 3-5 mm in diam., blotched white and reddish brown, without caruncle. Fl. and fr. Jun-Dec.
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