Monoecious. Stems slender, striate. Winter bud scales broadly ovate. Petiole 4--5 cm; leaf blade palmately 3--5-foliolate; petiolules slender, ca. 1 cm; leaflets obovate-orbicular, sometimes broadly elliptic, leathery, abaxially glaucous, adaxially green and shiny, margin thickened. Racemes 5--7-flowered; bracts persistent; peduncle and pedicel slender. Pedicel 2.5--3.5 cm. Sepals yellowish green, thin, smooth, apex long acuminate; outer 3 sepals lanceolate, ca. 14 × 3.5 mm but inner 3 sepals narrower in male flowers. Petals absent. Male flowers: stamens ca. 7 mm; filaments ca. 9 mm, connate into a tube nearly to apex; connective apical appendage hornlike, ca. 2 mm. Pistillodes 3, minute. Female flowers: carpels 3, ovoid-terete, with 6 ca. 1.5 mm staminodes at base. Fruit not seen. Fl. Apr.
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