Korean snakeskin maple
| Korean snakeskin maple | ||||||||||||
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Korean snakeskin maple ( Acer tegmentosum ) |
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| Acer tegmentosum | ||||||||||||
| Maxim. |
The Korean snake skin maple ( Acer tegmentosum ) is a plant from the genus of maple ( Acer ) in the family of soap tree plants (Sapindaceae). It is native to eastern Asia.
description
Vegetative characteristics
The Korean snakeskin maple grows as a deciduous tree that can reach heights of up to 15 meters. The dark-gray bark has striking, chalk-white stripes due to its lenticels , which is what the part of the name "snakeskin" refers to. The branches have a smooth bark that is bluish-white during winter . The elliptical winter buds are blue.
The constantly against arranged on the branches leaves consist of a petiole and leaf blade. The bald petiole has a length of usually 4 to 7, rarely up to 13 centimeters. The paper-like, simple leaf blade has a length of 10 to 12 centimeters and a width of 7 to 9 centimeters three or five lobes with a rounded or almost heart-shaped base. The leaf lobes are broadly ovate, more rarely oval or triangular-oval in shape. Their tip is usually pointed and the leaf edge is serrated twice. The leaf lobes are ovate and sometimes there are two small basal, lateral lobes. The upper side of the leaf is bare and the underside is colored light green with yellowish hairs on the nerve branches. There are five major nerves and seven or eight pairs of lateral nerves.
Generative characteristics
Acer tegmentosum is Andromonöz . The flowering time in China is in April. The hanging, racemose inflorescence contains about 15 flowers. The very slender flower stalk is about 5 millimeters long.
The five-fold flowers have a double flower envelope . The five sepals are elongated with a blunt tip with a length of about 3 millimeters and a width of about 1.5 millimeters. The five petals are obovate with a length of about 3 millimeters and a width of about 2 millimeters. There is a bald, intrastaminal disc. There are eight bare stamens and a rudimentary ovary in the male flowers . In the female flowers there are rudimentary stamens as well as a bald ovary and a short style.
The yellowish-brown, winged nut fruit is 2.5 to 3 centimeters long with the wing and 1 to 1.3 centimeters wide. The nut fruit itself is flat or slightly convex. The wings are obtuse to almost horizontally spread. The fruits ripen in September.
The number of chromosomes is 2n = 26.
Occurrence
Acer tegmentosum is common in Siberia , Korea and China . In China, Acer tegmentosum thrives in pine and mixed forests at altitudes of 500 to 1000 meters in the provinces of Heilongjiang , Jilin and Liaoning .
Systematics
The first description of Acer tegmentosum was in 1856 by Karl Johann Maximowicz in Bulletin de la Classe Physico-Mathématique de l'Académie Impériale des Sciences de Saint-Pétersbourg , 15, p. 125. A synonym for Acer tegmentosum Maxim. is Acer pensylvanicum var. tegmentosum (Maxim.) Wesm. Acer tegmentosum belongs to the Macrantha section within the genus Acer .
swell
- Tingzhi Xu, Yousheng Chen, Piet C. de Jong, Herman John Oterdoom, Chin-Sung Chang: Aceraceae. : Acer tegmentosum , p. 540 online with the same text as the printed work , In: Wu Zheng-yi, Peter H. Raven, Deyuan Hong (ed.): Flora of China. Volume 11: Oxalidaceae through Aceraceae. Science Press and Missouri Botanical Garden Press, Beijing and St. Louis 2008, ISBN 978-1-930723-73-3 . (Sections Description, Distribution and Systematics)
Individual evidence
- ↑ a b Tingzhi Xu, Yousheng Chen, Piet C. de Jong, Herman John Oterdoom, Chin-Sung Chang: Aceraceae. : Acer tegmentosum , p. 540 online with the same text as the printed work , In: Wu Zheng-yi, Peter H. Raven, Deyuan Hong (ed.): Flora of China. Volume 11: Oxalidaceae through Aceraceae. Science Press and Missouri Botanical Garden Press, Beijing and St. Louis 2008, ISBN 978-1-930723-73-3 .
- ^ Acer tegmentosum at Tropicos.org. In: IPCN Chromosome Reports . Missouri Botanical Garden, St. Louis
- ^ Acer tegmentosum at Tropicos.org. Missouri Botanical Garden, St. Louis
- ^ Acer tegmentosum in the Germplasm Resources Information Network (GRIN), USDA , ARS , National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland.
