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Lower altitudes throughout central and southern Japan (not Hokkaido). Leaves small, 4–7 cm ( 1 + 1⁄ 2– 2 + 3⁄ 4 in) wide, with five or seven lobes and double-serrate margins seed wings 10–15 mm ( 3⁄ 8– 5⁄ 8 in). The overall form of the tree can vary from upright to weeping. Įven in nature, Acer palmatum displays considerable genetic variation, with seedlings from the same parent tree typically showing differences in such traits as leaf size, shape, and color. The seeds of Acer palmatum and similar species require stratification in order to germinate. The fruit is a pair of winged samaras, each samara 2–3 cm ( 3⁄ 4– 1 + 1⁄ 4 in) long with a 6–8 mm ( 1⁄ 4– 5⁄ 16 in) seed. The flowers are produced in small cymes, the individual flowers with five red or purple sepals and five whitish petals.
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The leaves are 4–12 cm ( 1 + 1⁄ 2– 4 + 3⁄ 4 in) long and wide, palmately lobed with five, seven, or nine acutely pointed lobes. In habit, its canopy often takes on a dome-like form, especially when mature. It may have multiple trunks joining close to the ground. Description Īcer palmatum is deciduous, with the growth habit of a shrub or small tree reaching heights of 6 to 10 m (20 to 33 ft), rarely 16 m (52 ft), reaching a mature width of 4.5 to 10 m (15 to 33 ft), often growing as an understory plant in shady woodlands. Many different cultivars of this maple have been selected and they are grown worldwide for their large variety of attractive forms, leaf shapes, and spectacular colors.
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Acer roseomarginatum (Van Houtte) Koidz.
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