Vasilis Teodoridis:
Aceraceae | Acer
82. Acer laurinum Hasskarl; Tijdschr. Natuurl. Gesch. Physiol. 10: 138. 1843.
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Acer chionophyllum Merrill; A. decandrum Merrill; A. garrettii Craib; A. laurinum subsp. decandrum (Merrill) A. E. Murray; A. laurinum var. petelotii (Gagnepain) Phamhoang; A. longicarpum Hu & W. C. Cheng; A. macropterum T. Z. Hsu & H. Sun (1997); not Visiani (1860); A. niveum Blume; A. philippinum Merrill.
Trees evergreen; to 30(-48) m tall; androdioecious; sometimes andromonoecious. Bark gray. Branchlets green; glabrous; winter buds ovoid; scales 7-11 pairs. Petiole (1.5-)3-6(-10) cm; glabrous; leaf blade abaxially glaucous; whitish or light blue-gray; adaxially glossy dark green; lanceolate or oblong-elliptic to ovate; 9-15 x 3-8 cm; abaxially ± pubescent; trinerved; lateral veins 5 or 6 pairs; 2 basal veins reaching beyond middle of blade; base rounded or cuneate or broadly cuneate; margin entire; glabrous; apex shortly acuminate to obtuse. Inflorescence cymose-paniculate; appearing in axils of fallen leaves; 2.5-10 cm; glabrous or pubescent; peduncle 5-35 mm. Pedicel 4-17 mm; glabrous. Flowers pale yellowish. Sepals 5; ovate; 2.5-3 mm; glabrous. Petals 5; 1.5-2.5 mm. Stamens (4-)8-12; glabrous; filaments ca. 5 mm in staminate flowers; ca. 2.2 mm in pistillate flowers. Disk amphistaminal; glabrous. Ovary rudimentary in staminate flowers. Samara brownish yellow; strongly veined; nutlets slightly convex; ca. 15 x 7 mm; pubescent or nearly glabrous; wing falcate; broadest near apex; including nutlet 4-7 x 2-3 cm; wings spreading acutely. Fruit peduncle 1-3 cm; stout. Fl. Jun-Sep; fr. Sep-Dec. 2n = 26.
Evergreen forests; scattered; 700-2500 m. SW Guangxi; Hainan; SE Xizang; NW and S Yunnan [Cambodia; S India; Indonesia; Laos; Malaysia; Myanmar; Philippines; Thailand; Vietnam].
The only true tropical maple spreading to the S Hemisphere; this species is relatively rare.