稀花枫 xi hua feng

Acer changhuaense (W. P. Fang & M. Y. Fang) W. P. Fang & P. L. Chiu; A. pauciflorum var. changhuaense W. P. Fang & M. Y. Fang; A. pubipalmatum W. P. Fang; A. pubipalmatum var. pulcherrimum W. P. Fang & P. L. Chiu.

Trees usually 10-15 m tall, andromonoecious. Bark gray or blackish gray. Branchlets slender, densely white tomentose; buds purple, scales ciliate along margins, apex ± acute. Leaves deciduous; petiole 2-4 cm, densely villous when young, soon less villous; leaf blade abaxially pale green, adaxially dark green, 4-5.5 × 2.5-7.5 cm, membranous, abaxially densely white villous, primary veins raised abaxially, base truncate or subcordate, deeply 5-lobed, rarely 7-lobed; lobes lanceolate, margin doubly serrate, teeth acute, apex acuminate. Inflorescence terminal, corymbose, usually 5-8-flowered; peduncles 2-3 cm, villous. Pedicel ca. 5 mm, very slender, villous. Sepals 5, ovate or ovate-oblong, margin ciliate, apex acute or obtuse. Petals 5, broadly ovate. Stamens 8, glabrous. Disk glabrous, extrastaminal. Ovary densely villous; style glabrous; stigmas very short, slightly revolute. Fruit purplish brown; nutlets globose, 3-4 mm in diam., pubescent or glabrous; wing including nutlet 9-20 × 5-7 mm, ± pubescent, wings spreading obtusely. Fl. May, fr. Sep.

● Sparse forests; 500-1000 m. S Anhui, Zhejiang.