Shrubs 1-3 m tall. Young branches yellow pubescent or glabrescent. Leaves 13-30 cm; petiole and rachis yellow pubescent; petiole 5-7 cm; leaflets 7 or 9; petiolules 3-5 mm but for terminal leaflet to 3 cm, densely yellow villous; leaflet blades lanceolate to oblong-elliptic, 7-15 × 2-5 cm, membranous, abaxially yellow villous and denser on veins, adaxially glabrous or only along midvein pubescent, secondary veins 8 or 9 on each side of midvein, thin and scattered, base cuneate and oblique, apex acuminate. Thyrses axillary, slightly shorter than leaves, yellow pubescent. Flowers 4-5 mm. Pedicel 2-4 mm, with joint, yellow pubescent. Calyx cup-shaped, 1-1.5 mm, 5-lobed; lobes ovoid-triangular, apex obtuse. Petals 5, white, oblong, 3.5-4 mm, both surfaces glabrous or only abaxially pubescent, apex ± acute. Filament tube slightly shorter than petals, outside glabrous, inside near throat covered with tough trichomes, apically 10-parted, segment apically 2-cleft. Ovary pubescent; style apically thickened; stigma conic, apically 2-cleft. Capsule spherical, 0.8-1.2 cm in diam., with very thin transverse stripes, yellow pubescent, 1(or 2)-seeded. Seeds dark purple or black, spherical, lustrous. Fl. Apr-Sep, fr. Aug-Dec.
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