五角枫 wu jiao feng

Acer mono Maximowicz, Bull. Cl. Phys.-Math. Acad. Imp. Sci. Saint-Pétersbourg 15: 126. 1856; A. cappadocicum Gleditsch subsp. mono (Maximowicz) A. E. Murray; A. laetum C. A. Meyer var. parviflorum Regel; A. leptophyllum W. P. Fang; A. mono subsp. incurvatum (W. P. Fang & P. L. Chiu) T. Z. Hsu; A. mono var. incurvatum W. P. Fang & P. L. Chiu; A. mono f. septemlobum W. P. Fang & T. P. Soong; A. pictum subsp. incurvatum (W. P. Fang & P. L. Chiu) H. Ohashi; A. pictum subvar. mono (Maximowicz) Maximowicz; A. pictum var. mono (Maximowicz) Franchet; A. pictum var. parviflorum (Regel) Schneider; A. truncatum Bunge subsp. mono (Maximowicz) A. E. Murray.

Leaf blade 5- or 7-lobed, to middle or shallowly lobed, abaxially not hairy, or pilose on main veins. Nutlets flat, compressed, 1-1.3 cm × 8-10 mm; wing oblong, including nutlet 3-3.5 × 1-1.5 cm, wings spreading variously. Fl. Apr-May, fr. Sep. 2n = 26.

Broad-leaved forests; sea level to 3000 m. Anhui, Gansu, Hebei, Heilongjiang, Henan, Hubei, Hunan, Jiangsu, Jilin, Liaoning, Nei Mongol, Shaanxi, Shanxi, Sichuan, Yunnan, Zhejiang [Japan, Korea, Mongolia, E Russia].