Vasilis Teodoridis:
Aceraceae | Acer
27. Acer flabellatum Rehder in Sargent; Trees & Shrubs. 1: 161. 1905.
??? shan ye feng
Acer campbellii J. D. Hooker & Thomson ex Hiern subsp. flabellatum (Rehder) A. E. Murray; A. campbellii var. yunnanense Rehder; A. flabellatum var. yunnanense (Rehder) W. P. Fang; A. gracile W. P. Fang & M. Y. Fang (1966); not Saporta (1867); A. mapienense W. P. Fang; A. shangszeense W. P. Fang & T. P. Soong; A. shangszeense var. anfuense W. P. Fang & T. P. Soong.
Trees ca. 10 m tall; andromonoecious. Bark smooth. Branchlets slender; glabrous; winter buds ellipsoid; margin ciliate; inner scales densely villous outside. Leaves deciduous; petiole to 7 cm; slender; leaf blade abaxially pale green; adaxially dark green; 8-12 cm wide; papery or membranous; abaxially glabrescent except villous on veins and tufts of hairs at vein axils; adaxially glabrous; primary and secondary veins raised on both surfaces; base deeply cordate; usually 7-lobed; lobes ovate-oblong; rarely ovate or triangular-ovate; margin sharply and irregularly serrate with appressed acute teeth; apex acuminate or rarely long acuminate. Inflorescence paniculate; to 5 cm; glabrous; peduncles ca. 3 cm. Pedicel ca. 1 mm; slender; glabrous. Sepals 5; ovate-lanceolate; ca. 3 mm; ciliate along margin; apex acute. Petals 5; obovate; ca. as long as sepals. Stamens 8; glabrous. Disk glabrous; slightly lobed; extrastaminal. Ovary glabrous. Fruit yellowish brown; nutlets convex; subglobose; ca. 6 x 5 mm; wing including nutlet 3-3.5(-4) x 1-1.2 cm; wings spreading horizontally. Fl. Jun; fr. Oct. 2n = 26.
Mixed forests; 800-3500 m. Guangxi; Guizhou; W Hubei; Jiangxi; Sichuan; Yunnan [Myanmar; Vietnam].