Acer sutchuenense Franchet

This is a rare, vulnerable species.

Trees small, 8-12 m tall, androdioecious, sometimes andromonoecious. Bark gray, smooth. Branchlets purplish brown at end of first year, later becoming light grayish brown, glabrous, marked by numerous lenticels; winter buds ovoid, scales 4 or 6 pairs, imbricate, lustrous brown, ciliate. Leaves deciduous, trifoliolate; petiole 3-8 cm, densely pilose near articulation of petiolules; leaflet blades elliptic-oblong to oblong-lanceolate, (5-)8-15 × 2-6 cm, papery, abaxially glaucous, sparsely pubescent on midvein, with tufts of hairs at vein axils, adaxially glabrous, veins 8-10, apex acuminate; middle petiolules 1.5-2 cm, glabrescent; lateral petiolules 5-8 mm, glabrescent; lateral leaflets obliquely rounded at base, margin remotely dentate. Inflorescence corymbiform-racemose, on leafy or rarely leafless branches, glabrous, 8-12-flowered; peduncles 8-16 mm. Pedicel 8-12 mm, slender, glabrous. Staminate flowers: sepals 5(or 6), ovate or lanceolate, ca. 6 mm; petals 5(or 6), obovate, ca. as long as sepals; stamens 10-16, nearly 2 × as long as petals; filaments glabrous; rudimentary ovary small, pilose; disk glabrous, extrastaminal. Fruit in short glabrous racemes, purplish or brownish; nutlets 6-7 mm, strongly convex; wing including nutlet 2-5.5 cm × ca. 7 mm, wings spreading erectly. Fl. Apr-May, fr. Sep.

W Hubei, NW Hunan, Sichuan.

● Mixed forests; 1000-2500 m.

Acer emeiense T. Z. Hsu; A. sutchuenense subsp. tienchuanense (W. P. Fang & T. P. Soong) W. P. Fang; A. tienchuanense W. P. Fang & T. P. Soong; Crula sutchuenensis (Franchet) Nieuwland.

Acer sutchuenense là một loài thực vật có hoa trong họ Bồ hòn. Loài này được Franch. mô tả khoa học đầu tiên năm 1894.

四川槭（学名：Acer sutchuenense）为槭树科槭属下的一个种。