Acer fengii A. E. Murray.

Trees to 15 m tall. Bark dark gray or dark brown, rough. Branchlets glabrous, those of present year purplish brown, older ones dark brown or dark gray; winter buds ovoid, scales slightly ciliate. Leaves persistent; petiole reddish, 2-4 cm; leaf blade abaxially pale green, adaxially dark green, ovate-oblong or oblong-elliptic, (7-)8-14 × 3.5-4.2(-6) cm, leathery, both surfaces glabrous, veins 7-9 pairs, base obtuse or broadly cuneate, apex acuminate, acumen 8-10 mm. Flowers unknown. Infructescence corymbose, 3-4 cm, yellowish pubescent. Fruiting peduncles 1.5-2 cm, pubescent. Fruit yellowish brown; nutlets strongly convex, ca. 1 × 1.2-1.4 cm, wings spreading at 90°. Fr. Sep.

● Mixed forests; 1000-1500 m. SE Yunnan.