Acer sterculiaceum subsp. franchetii (Pax) Murray

Trees to 20 m tall. Bark gray, vertically fissured. Branchlets terete, those of present year grayish brown, older ones grayish brown or dark grayish brown; winter buds gray, circular-conical, scales ciliate along margin. Leaves deciduous; petiole 9-12 cm, pubescent at tip; leaf blade abaxially greenish, adaxially dark green, 15-25 × 15-25 cm, subleathery, abaxially densely yellowish pubescent, adaxially pubescent, primary veins 3, secondary veins 21-24 pairs, distinct abaxially, base cordate, 3-lobed; lobes ovate, margin crenate, apex acute. Flowers unknown. Infructescence paniculate, 7-9(-12) cm, pubescent. Fruiting pedicel 1.5-3 cm, pubescent. Nutlets convex, yellowish pubescent; wing falcate, including nutlet 4-4.5 × 1.5-1.7 cm, wings spreading erectly or acutely. Fl. unknown, fr. Sep.

Trees to 15 m tall. Bark dark purple. Branchlets dark purple, rough, those of present year gray pubescent, older ones glabrous; winter buds conical, scales triangular, margin ciliate. Leaves deciduous; petiole 7-9 cm, gray pubescent; leaf blade abaxially greenish, adaxially dark green, ovate, 14-18 × 12-15 cm, leathery, abaxially glabrous except pubescent at vein axils, adaxially glabrous, primary veins 3, secondary veins 14-16 pairs, distinct abaxially, 3-lobed; lobes ovate. Flowers unknown. Infructescence racemose. Fruiting pedicel 7-15 mm. Nutlets convex, round; wing falcate, including nutlet 6-6.5 × ca. 1.2 cm, wings spreading erectly. Fl. unknown, fr. Sep.

NW and S Yunnan.

NE Guangxi, SE Guizhou, SW Hubei, NW Hunan.

● Mixed forests, valleys; 2000-3200 m.

● Mixed forests, valleys; 1500-1800 m.

Acer franchetii Pax var. acuminatilobum W. P. Fang & H. F. Chow; A. kungshanense var. acuminatilobum (W. P. Fang & H. F. Chow) W. P. Fang.

Acer lichuanense C. D. Chu & G. G. Tang.