Vasilis Teodoridis:
Aceraceae | Acer
74. Acer maximowiczii Pax; Hooker’s Icon. Pl. 19: t. 1897. 1889.
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Acer maximowiczii subsp. porphyrophyllum W. P. Fang; A. pectinatum Wallich ex G. Nicholson subsp. maximowiczii (Pax) A. E. Murray; A. urophyllum Maximowicz.
Trees to 12 m tall; andromonoecious. Bark blackish brown; smooth. Branchlets slender; glabrous; winter buds oblong-ellipsoid; glabrous. Leaves deciduous; petiole 5-7 cm; glabrous; leaf blade abaxially pale green; adaxially dark green; ovate or triangular-ovate; 6-11 x 4-9 cm; papery; abaxially rufous pubescent at axils of lateral veins and base of main veins; adaxially glabrous; base subcordate or cordate; rarely truncate; margin doubly serrulate and lobulate with adpressed apiculate coarse teeth; distinctly 5-lobed; middle lobe triangular-ovate or ovate; apex caudate-acuminate; lateral lobes ovate; basal lobes ovate; small. Inflorescence terminal on leafy branchlets; pendulous; racemose; 4-5 cm; 10-15-flowered; appearing after leaves develop fully. Staminate flowers: pedicel 3-4 mm; glabrous; sepals 5; ovate-oblong; apex obtuse; petals 5; obovate; stamens 8; disk intrastaminal; ovary rudimentary. Pistillate flowers: pedicel ca. 6 mm; slender; glabrous; sepals 5; elliptic; apex obtuse; petals 5; ovate-oblong; apex obtuse; stamens 8; disk very short; glabrous; intrastaminal; ovary purple; glabrous; style very short. Fruit brownish yellow; nutlets flat; ca. 6 mm in diam.; wing including nutlet 1.8-2.5 cm x ca. 8 mm; wings spreading obtusely. Fl. May; fr. Sep.
? Mixed forests; valleys; 1800-2500 m. S Gansu; NE Guangxi; Guizhou; W Henan; W Hubei; Hunan; S Qinghai; S Shaanxi; S Shanxi; Sichuan.