Large deciduous tree, up to 30 meters high, the bark is flaky; the tender branches are yellow-brown downy, the old branches are bald, reddish brown after drying, with small lenticels. Leaves are large, broadly ovoid in outline, 9-18 cm wide, 8-16 cm long, shallow triangular heart-shaped at the base, or nearly truncated, palmately 5-7 lobed in the upper part, sparsely 3-lobed, and central lobes deeply lobed More than half, length 7-9 cm, width 4-6 cm, the lobes on both sides are slightly shorter, and there are a few lobed coarse teeth on the edges. The upper and lower sides are initially covered with gray-yellow coats, and later fall off, only hair on the dorsal veins, palms 5 or 3 shaped veins, emanating from the base; petiole 3-8 cm long, cylindrical, tomentose, enlarged at the base; stipules small, shorter than 1 cm, sheath-shaped at the base. Flowers 4 numbers; male globular inflorescences are sessile, with long hairs at the base, sepals are short, stamens are much longer than petals, filaments are extremely short, anthers are elongated, and apical scutellons are slightly enlarged; female globular inflorescences often have stalks, sepals are hairy, The petals are oblanceolate, 4 carpels, elongated styles, and curled apex. The fruit branches are 10-15 cm long, with 3-5 spherical capitate infructescences, rarely two; the capitular infructescence diameter is 2-2.5 cm, the persistent style is protruding and thorn-like, 3-4 mm long, small nuts There are yellow hairs in between, protruding outside the capitate infructescence.
Like light, like humid and warm climate, more cold-resistant. The soil requirements are not strict, but it is suitable for slightly acidic or neutral soil with good drainage. Although slightly alkaline soil can grow, it is prone to yellowing. The root system is relatively shallow, and it is vulnerable to inversion during typhoons. The anti-air pollution ability is strong, and the blade has the function of absorbing toxic gas and accumulating dust. This species has a tall trunk, lush foliage, rapid growth, strong adaptability, easy survival, resistance to pruning, and resistance to smoke and dust. Therefore, it is widely planted as a street greening tree species and also a tree species for fast-growing timber; it is more resistant to toxic gases such as sulfur dioxide and chlorine. Strong resistance.
