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FOC | Family List | FOC Vol. 11 | Aceraceae | Acer

43. Acer pubipetiolatum Hu & W. C. Cheng, Bull. Fan Mem. Inst. Biol., n.s. 1: 205. 1948.

毛柄枫 mao bing feng

Trees to 10 m tall, andromonoecious. Bark gray or dark gray, smooth. Branchlets slender, those of present year purplish green, pubescent, older ones greenish or yellowish gray, glabrous. Leaves deciduous; petiole 8-10 mm, densely yellowish or brownish villous or glabrous; leaf blade abaxially pale green, adaxially dark green, lanceolate or oblong-lanceolate, 6-9 × 2-3 cm, papery, abaxially with tufts of hairs at vein axils, adaxially glabrous, base rounded or subcordate, deeply 5- or 7-lobed; lobes entire or doubly serrate near and below apex, apex acuminate. Inflorescence terminal, corymbose, 1-1.5 cm, gray villous. Sepals 5, green, ovate-oblong, ca. 4 mm. Petals 5, white, obovate, ca. 3 mm in diam. Stamens 8. Disk purple, glabrous, extrastaminal. Ovary purple, slightly pubescent. Fruit yellowish green, pubescent; nutlets convex, 8-9 mm; wing falcate, including nutlet 2.8-3.4 × ca. 1.4 cm, wings spreading obtusely. Fl. Mar-Apr, fr. Jul-Aug or Sep.

● Mixed forests, valleys, limestone slopes; 800-2600 m. SW Guizhou, Yunnan.

1 Leaf blade usually serrulate in upper part; petiole tomentose; samara ca. 3.4 cm.   43a var. pubipetiolatum
+ Leaf blade entire throughout; petiole tomentose when young, but glabrescent when mature; samara 2.8-3 cm.   43b var. pingpienense

Lower Taxa


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