Acer truncatum Bunge

Trees 5-10 m tall, andromonoecious. Bark grayish brown or dark brown. Branchlets slender, glabrous; winter buds ovoid. Leaves deciduous; petiole 3-9 cm, glabrous, rarely puberulent at base when young; leaf blade abaxially pale green, adaxially dark green, 8-12 × 5-10 cm, papery, abaxially reticulate, glabrous, rarely with tufts of hairs at vein axils when young, adaxially glabrous, base usually truncate or rarely subcordate, usually 5-lobed, rarely 7-lobed; lobes triangular-ovate or triangular-lanceolate, 3-5 × 1.5-2 cm, margin entire, apex acuminate or caudate-acuminate. Inflorescence erect, corymbose; peduncles 1-2 cm, slender, glabrous. Pedicel ca. 1 cm, slender. Sepals 5, oblong, 4-5 mm, apex obtuse. Petals 5, oblong-obovate, 5-7 mm. Stamens 8, 2-3 mm in staminate flowers, shorter in pistillate flowers, glabrous, inserted near inner margin of disk. Disk slightly lobed. Ovary in fertile flowers compressed; style ca. 1 mm, glabrescent. Infructescence corymbose, pendulous, each with 3-10 fruit. Nutlets flat, thick, 1.3-1.8 × 1-1.2 cm, glabrous; wing greenish white, usually ca. as long as nutlets, rarely longer, parallel on both sides, wings spreading at obtuse or right angles. Fl. Apr, fr. Aug. 2n = 26.

It is a temperate plant. It grows in good moist soil. It grows in forests between 400-1,000 m altitude in northern China. It suits hardiness zones 5-8.

The seed are roasted and eaten.

Seed should be pre-soaked for 24 hours then kept cold at 0-8°C for 2-4 months to assist them to grown. Seed can be sown fresh if green seeds are used. Layering or cuttings can be used.