Oliver Maple

Trees to 7 m tall, andromonoecious. Branchlets smooth, green and glabrous, greenish brown or olive-brown in second year and ± with grayish white waxy bloom; winter buds ovoid. Leaves deciduous; petiole 2.5-6 cm, glabrous; leaf blade adaxially dark yellowish green, 5-8 × 5-9 cm, base truncate or subcordate with a broad sinus, abaxially lustrous, reticulate and glabrous with exception of axillary tufts of pale hairs, 5-lobed, rarely 3- or 4-lobed in young shoots; lobes triangular-ovate, margin sharply serrulate, apex acuminate. Inflorescence corymbose, terminal on a 2-leaved branchlet. Sepals 5, purplish, elliptic-ovate, ca. 2 mm, margin denticulate. Petals 5, white, ovate or broadly ovate-obtuse. Stamens 8, longer than petals, inserted inside disk. Ovary sparsely villous, with long hairs, minute, villous, and rudimentary in staminate flowers; styles 2, ca. 2 mm. Samaras glabrous; nutlets brown, convex, ca. 6 × 5 mm, distinctly veined; wings spreading nearly horizontally, wing including nutlet 2.5-3.5 × ca. 1 cm. Fl. May, fr. Sep.

Anhui, Fujian, S Gansu, Guizhou, S Henan, W Hubei, Hunan, Jiangxi, S Shaanxi, Sichuan, C and N Taiwan, Yunnan, Zhejiang.

● Forests, valleys; 1000-2000 m.

Acer campbellii J. D. Hooker & Thomson ex Hiern subsp. oliverianum (Pax) A. E. Murray; A. campbellii subsp. schneiderianum (Pax & K. Hoffmann) A. E. Murray; A. lanpingense W. P. Fang & M. Y. Fang; A. schneiderianum Pax & K. Hoffmann; A. schneiderianum var. pubescens W. P. Fang & Y. T. Wu.