Description
provided by eFloras
Trees to 20 m tall, andromonoecious. Bark black-gray. Branchlets brown, glabrous; winter buds ellipsoid, large, scales 4 pairs, glabrous. Leaves deciduous; petiole 2-4 cm, glabrous, leaf blade abaxially pale green, adaxially dark green, ovate or ovate-oblong, 10-14 × 5-8 cm, papery, abaxially with barbed hairs at vein axils when young, glabrescent, adaxially glabrous, base subcordate or nearly rounded, undivided, margin entire or nearly entire, sometimes serrulate, apex caudate. Inflorescence terminal, racemose, 40-50-flowered. Pedicel ca. 2 mm, glabrous. Sepals 5, oblong-ovate, ca. 3 mm, apex obtuse. Petals 5, yellowish green, ca. as long as sepals. Stamens 8, glabrous, rudimentary in pistillate flowers; anthers pale yellow. Disk glabrous, intrastaminal. Ovary glabrous; style very short; stigmas widely spreading. Fruit brownish when mature; nutlets flat, ovate-oblong, ca. 8 × 5 mm; wing falcate, including nutlet 2-2.5 cm × ca. 8 mm, wings spreading obtusely, rarely horizontally. Fl. Mar, fr. Sep. 2n = 26.
- license
- cc-by-nc-sa-3.0
- copyright
- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Distribution
provided by eFloras
E. Himalaya (Nepal to Bhutan), Assam. S. Tibet, N. Burma, W. China.
- license
- cc-by-nc-sa-3.0
- copyright
- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Distribution
provided by eFloras
SE Xizang, Yunnan [Bhutan, N India, N Myanmar, Nepal].
- license
- cc-by-nc-sa-3.0
- copyright
- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Habitat
provided by eFloras
Mixed forests; 1700-3000 m.
- license
- cc-by-nc-sa-3.0
- copyright
- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Synonym
provided by eFloras
Acer hookeri Miquel; A. hookeri var. normale Schwerin; A. hookeri var. orbiculare W. P. Fang & Y. T. Wu; A. medogense T. Z. Hsu & Z. K. Zhou; A. pluridens T. Z. Hsu & H. Sun; A. sikkimense subsp. hookeri (Miquel) Wesmael; A. sikkimense var. serrulatum Pax; A. sikkimense var. subintegrum Schwerin.
- license
- cc-by-nc-sa-3.0
- copyright
- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA