Hornbeam-leaved maple ( Acer carpinifolium , illustration)
|Siebold & Zucc.|
The hornbeam-leaved maple ( Acer carpinifolium ) is a species of tree from the genus of the maples ( Acer ). These are in today family of the soap tree plants provided (Sapindaceae), but were formerly their own families of maple plants (Aceraceae). The Japanese name is Chidori no ki ( Japanese 千 鳥 の 木 , German " plover tree "), after the shape of the fruit, or Yamashiba kaede ( 山 柴 楓 ).
It is a tree that can grow up to ten meters tall , in Central Europe it can reach four to five meters after 20 years. The shoots are glabrous, reddish brown in color when they shoot, later the bark turns gray to dark gray. The leaves are unlapped, oblong to obovate, eight to 13 inches long and three to seven inches wide. The leaf edge is sharply double-serrated, the leaf base rounded to slightly heart-shaped. The stem is one to two inches long. The underside of the leaves is hairy when they shoot and is lighter green in color than the upper side. From the midrib, 18 to 25 pairs of protruding side nerves branch off and form a characteristic feature that is unusual for maple leaves. The autumn color is yellow-brown.
The flowers are greenish yellow, dioecious , about an inch wide, in bare clusters. The male flowers are ten to 15 together, the female inflorescences only consist of five to ten flowers. There are usually four, sometimes five sepals and petals each. In the male flowers, the petals are reduced or absent, they usually contain four (six to ten) stamens . In addition to the gynoeceum , the female flowers also contain reduced, sterile stamens (staminodes). The flowering time is in May, together with the leaf shoots.
The distribution area is in Japan on Honshū (western part), Shikoku and Kyushu . Altitudes of 200 to 1500 meters are settled. The locations are in deciduous forests, mostly in places that are well supplied with water, such as along streams.
- Helmut Pirc: Maples . Eugen Ulmer, Stuttgart (Hohenheim) 1994, ISBN 3-8001-6554-6 , pp. 121 ff .
- Acer carpinifolium in the Flora of Japan