Acer sieboldianum

Acer sieboldianum

taxobox
name = "Acer sieboldianum"


regnum = Plantae
unranked_divisio = Angiosperms
unranked_classis = Eudicots
unranked_ordo = Rosids
ordo = Sapindales
familia = Sapindaceae
genus = "Acer"
species = "A. sieboldianum"
binomial = "Acer sieboldianum"
binomial_authority = Miq.|

"Acer sieboldianum" (Siebold's Maple; Japanese: コハウチワカエデ "kohauchiwakaede") is a species of maple native to Japan and common in the forests of Hokkaidō, Honshū, Shikoku and Kyūshū Islands; in the south of the range it is restricted to mountain forests.Kobe city: [http://shinrin.cool.ne.jp/sub382.html "Acer sieboldianum"] (in Japanese; [http://translate.google.com/translate?hl=en&sl=ja&u=http://shinrin.cool.ne.jp/sub382.html&sa=X&oi=translate& google translation] )] It is named after Philipp Franz von Siebold.

Description

It is a slow-growing, small to medium-sized deciduous tree growing to 10–15 m tall, with smooth grey-brown bark. The young shoots are green to red, thinly covered with white hairs in their first year. The leaves are mid to dark green, 4-8 cm long and 5-10 cm broad with a 3–7 cm petiole, and palmately lobed with nine to eleven (occasionally just seven) lobes. The young leaves in spring are downy with white hairs, with the petiole and veins on the underside of the leaf remaining hairy all summer, a feature useful in distinguishing it from the related "Acer palmatum". In autumn, the leaves turn bright orange to red. The flowers are pale yellow, produced in corymbs of 10–15 together; it is andromonoecious, with inflorescences containing flowers with either both sexes, or just male. The fruit is a paired samara, the pair spreading horizontally, each seed with a 15–20 mm wing. Flowering is in late spring, with fruit maturation in early autumn.Okayama science university: [http://had0.big.ous.ac.jp/plantsdic/angiospermae/dicotyledoneae/choripetalae/aceraceae/kohauchiwakaede/kohauchiwakaede.htm "Acer sieboldianum"] (in Japanese; [http://translate.google.com/translate?hl=en&sl=ja&u=http://had0.big.ous.ac.jp/plantsdic/angiospermae/dicotyledoneae/choripetalae/aceraceae/kohauchiwakaede/kohauchiwakaede.htm&sa=X&oi=translate& google translation] )] Kanagawa Prefecture trees and shrubs: [http://www.geocities.jp/greensv88/jumoku-zz-kohauchiwakaede.htm "Acer sieboldianum"] (in Japanese; [http://translate.google.com/translate?hl=en&sl=ja&u=http://www.geocities.jp/greensv88/jumoku-zz-kohauchiwakaede.htm&sa=X&oi=translate& google translation] )] van Gelderen, C.J. & van Gelderen, D.M. (1999). "Maples for Gardens: A Color Encyclopedia".]

The smooth bark and yellow flowers help distinguish it from the closely related "Acer japonicum" (Japanese, "hauchiwakaede"), which has rough, scaly bark, and red flowers, while the hairy stems and yellow flowers distinguish it from "Acer shirasawanum" (Japanese, "ooitayameigetsu"; with hairless stems and red flowers).Japanese mountain plants: [http://www.ootk.net/cgi/shikihtml/shiki_387.htm kohauchiwakaede] (in Japanese; [http://translate.google.com/translate?hl=en&sl=ja&u=http://www.ootk.net/cgi/shikihtml/shiki_387.htm&sa=X&oi=translate& google translation] )]

Cultivation

Siebold's Maple is not as rare in cultivation as it seems. Specimens are often mistaken for and mislabeled as similar species in the series "Palmata", such as "Acer japonicum", "Acer shirasawanum" and "Acer palmatum"; it is also sometimes confused with "Acer pseudosieboldianum" (Korean Maple or Keijo Maple), a closely related species from the adjacent mainland of northeastern Asia.

Several cultivars have been selected, most only rarely seen outside of Japan. Cultivars include 'Kinugasa yama', 'Mi yama nishiki', 'Ogura yama', 'Sode no uchi' and 'Osiris'. [de Jong, P. (2007). Parels uit het Von Gimborn Arboretum (23) - Acer sieboldianum 'Osiris'. "Hortus" (Utrecht) 26 (2).]

References


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