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99. Acer negundo Linnaeus, Sp. Pl. 2: 1056. 1753.
复叶枫 fu ye feng
Acer fauriei H. Léveillé & Vaniot.
Trees to 20 m tall, dioecious. Bark yellowish brown or gray-brown. Branchlets glabrous, those of present year green, older ones yellowish brown; winter buds small, scales 2(or 3) pairs. Leaves deciduous; leaf blade 10-25 cm, papery, pinnate; petiolules 5-7 cm, pubescent, glabrescent; leaflets 3-7(-9) per petiole; leaflet blades ovate or elliptic-lanceolate, 8-10 × 2-4 cm, base rounded or truncate, margin entire or with 3-5 teeth, apex acute. Pistillate inflorescence pendulous, racemose or compound racemose, axillary from leafless buds, 15-50-flowered. Staminate inflorescence usually a cluster of 4 flowers. Flowers 4-merous. Petals and disk absent. Stamens purplish, 4-6. Ovary glabrous. Samaras brownish yellow; nutlets convex, glabrous; wing including nutlet 3-3.5 cm × 8-10 mm, wings spreading acutely or nearly erectly. Fl. Apr, fr. Sep. 2n = 26.
Widely cultivated and naturalized in China [native to North America].
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