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Acer japonicum Thunb., Syst. Veg. ed. 14 911 1784. (Syn: Acer circumlobatum Maxim.; Acer circumlobatum var. insulare Pax; Acer heyhachii Matsum. ex Makino; Acer insulare Pax; Acer japonicum var. insulare (Pax) Ohwi; Acer japonicum var. kobakoense (Nakai) Hara; Acer kobakoense Nakai; Acer monocarpon Nakai);
Japan (Hokkaido, Honshu), ?Russian Far East (?S-Kuril Isl.), China (I) (Jiangsu
(I), Liaoning (I)), Canada (I) (Ontario (I)) as per Catalogue of Life; Acer japonicum (Downy Japanese Maple or Fullmoon Maple; Japanese: ハウチワカエデ hauchiwakaede) is a species of maple native to Japan, on Honshū, Hokkaidō, Kyūshū (Nagasaki Prefecture), and also southern Korea.[1][2] It is a small deciduous tree growing to 5–10 m (rarely 15 m) tall, with a trunk up to 40 cm diameter. The bark is smooth on young trees, becoming rough and scaly on old trees. The shoots are slender, and thinly downy with whitish hairs. The leaves are rounded, 7–15 cm diameter with 9–13 (rarely 7) serrate lobes incised to half or less of the diameter of the leaf; they are downy at first with white hairs, the hairs mostly lost by late summer except on the veins and the underside of the leaf; the petiole is 2–4 cm long and hairy. In autumn, the leaves turn bright orange to dark red. The flowers are 1 cm diameter, dark purplish-red with five sepals and petals; they are produced 10–15 together in drooping corymbs in early spring as the leaves start to open. The fruit is a paired samara with the nutlets 7 mm diameter with a 20–25 mm wing, hanging under the leaves.[1][2][3][4][5]
A. japonicum is frequently cultivated as an ornamental plant in temperate regions of Europe, North America, and elsewhere, though much less commonly than A. palmatum. In cultivation, it is often only a shrubby tree with multiple trunks joining at ground-level.[4]
Its preferred growing conditions are similar to those of A. palmatum, but it is sometimes considered more tolerant of cold, especially compared to the more delicate cultivars of the latter.[4]
(From Wikipedia on 22.1.14)
Sapindaceae Fortnight: Acer japonicum from California-GS-10 : Attachments (1). 1 post by 1 author.
Acer japonicum photographed from California
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