The flowers are androdioecious, produced in small corymbs in spring, the fruit being a paired samara with two winged seeds about 1 cm long with a 3 cm wing. After the infection has subsided and if the. If there are any leaves left, they’ll be wilted, curled and brown. Trees affected by anthracnose might prematurely lose their first flush of leaves early on. Paperbark maple is widely used as an accent tree on corners, in parks, and near utilities. Spring and tree disease go hand in hand, and anthracnose is a disease that can hinder leaf growth on trees like ash, maple, oak or sycamore. The upper leaf surface is dark green, while the lower leaf surface is blue-green to gray-green, and laden with fine hairs. The leaves are compound, with a 2–4 cm petiole with three leaflets, each 3-10 cm long and 2-6 cm broad, dark green above, bright glaucous blue-green beneath, with several blunt teeth on the margins. Paperbark maple leaves are trifoliate each leaf features three coarsely toothed leaflets. The shoots are densely downy at first, this wearing off by the second or third year and the bark exfoliating by the third or fourth year. The bark is smooth, shiny orange-red, peeling in thin, papery layers it may become fissured in old trees. It is a small to medium-sized deciduous tree, reaching 6-9 m (20-30 ft) tall, 5-6 m (15-25 ft) wide, with a trunk up to 70 cm (2 ft) diameter. Acer griseumis a species of maple native to central China, in the provinces of Gansu, Henan, Hubei, Hunan, Shaanxi, Shanxi, and Sichuan, at altitudes of 1,500–2,000 m.
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