Korean birch

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Korean birch
Creamy Bark Birch (Betula costata) .PNG

Korean birch ( Betula costata )

Systematics
Rosids
Eurosiden I
Order : Beech-like (Fagales)
Family : Birch family (Betulaceae)
Genre : Birch trees ( betula )
Type : Korean birch
Scientific name
Betula costata
Trautv.

The Korean birch ( Betula costata ) or Rib birch is a medium sized deciduous tree of the genus Birken in the family of birch family (Betulaceae). The distribution area is in Korea, China and eastern Russia.

description

The Korean birch is a tree up to 20 meters high with light yellow to gray-yellow, very thinly rolling bark that loosens in large scales . Young shoots are brown, hairy and have numerous glands. The coarse leathery leaves are egg-shaped, 3.5 to 7 inches long and 1.5 to 4.5 inches wide, long, pointed with mostly rounded bases and finely and sharply double-sawn edges . The upper side of the leaf is light green and often slightly hairy, the underside is also light green and covered with glands. 10 to 16 rib-like protruding nerve pairs are formed per leaf. The petiole is 0.8 to 1.5 inches long. The autumn color is golden yellow. As female inflorescences , 2 centimeters long, ellipsoidal to spherical catkins are formed. The middle lobes of the fruit scales are twice as long as the side lobes. The fruits are obovate, about 2.5 millimeters large, hairless nuts with membranous wings. The species blooms from May to June, the fruits ripen from July to September.

Distribution and ecology

The distribution area is in Korea, in the Chinese provinces of Hebei , Heilongjiang , Jilin , Liaoning , Inner Mongolia and in the Russian Primorye region . There it grows in cool, moist mixed forests at heights of 600 to 2500 meters on moderately dry to fresh, poorly nutrient-rich, weakly acidic to alkaline soils in sunny to light-shaded, summer-cool and winter-cold locations. The species is frost hardy.

Systematics and research history

The Korean birch ( Betula costata ) is a kind of the genus of birch ( Betula ) in the family of birch family (Betulaceae). It was first described in 1859 by Ernst Rudolph von Trautvetter in the Mémoires présentés a l'Académie Impériale des Sciences de St.-Pétersbourg par Divers Savans et lus dans ses assemblées . Synonyms are Betula ermanii var. Costata and Betula ulmifolia var. Costata .

use

The wood is used as heating material and to make charcoal . The species is often used as an ornamental tree due to its remarkable autumn colors .

proof

literature

  • Andreas Roloff, Andreas Bärtels: Flora of the woods. Purpose, properties and use . 3rd, corrected edition. Eugen Ulmer, Stuttgart (Hohenheim) 2008, ISBN 978-3-8001-5614-6 , pp. 137-138 .
  • Wu Zheng-yi, Peter H. Raven (Ed.): Flora of China . Volume 4: Cycadaceae through Fagaceae . Science Press / Missouri Botanical Garden Press, Beijing / St. Louis 1999, ISBN 0-915279-70-3 , pp. 310 (English).

Individual evidence

  1. ↑ a b German names according to Roloff et al .: Flora der Gehölze , p. 137
  2. ↑ Roloff et al .: Flora of the Woods , p. 137
  3. ↑ a b c d e Liguo Fu, Nan Li, Thomas S. Elias, Robert R. Mill: Betula costata . In: Wu Zheng-yi, Peter H. Raven (Ed.): Flora of China . Volume 4: Cycadaceae through Fagaceae . Science Press / Missouri Botanical Garden Press, Beijing / St. Louis 1999, ISBN 0-915279-70-3 , pp. 310 (English).
  4. ↑ a b c Roloff et al .: Flora of the Woods , p. 138
  5. ↑ a b Betula costata. In: Germplasm Resources Information Network (GRIN). United States Department of Agriculture, accessed December 28, 2011 .

Web links

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