Monoecious. Stems dark brown to grayish brown when dry, terete, striate, lenticellate. Petiole 2.5--3 cm; leaf blade palmately 5--9-foliolate; petiolules 1--2 cm; leaflets oblong-lanceolate, 7.5--8 × 2--2.5 cm, subleathery, abaxially pale green and paler green densely maculate, adaxially green, base cuneate, apex caudate-acuminate; primary veins abaxially conspicuously prominent, adaxially inconspicuous; secondary veins anastomosing near margin. Racemes several, 5--6 cm, 4- or 5-flowered; bracts persistent. Pedicel 1--1.5 cm. Sepals 6, yellowish green; outer 3 sepals ovate-lanceolate, ca. 1.7 × 0.5 cm, apex caudate-acuminate; inner 3 sepals 2--3 mm wide but larger in female flowers. Petals absent. Male flowers: filaments ca. 3 mm, connate into a tube; anthers 2.5--3 mm; connective apical appendage apiculate, ca. 1 mm. Pistillodes 3, subulate. Female flowers: staminodes small, inserted at base of carpels. Fruit not seen.

* Mountain slopes; 1000--1300 m. Yunnan (Funing Xian).