Caucasian shrub birch
| Caucasian shrub birch | ||||||||||||
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Caucasian shrub birch ( Betula raddeana ) |
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| Betula raddeana | ||||||||||||
| Trautv. |
The Caucasian shrub birch ( Betula raddeana ) is a tree or shrub from the genus birch in the birch family (Betulaceae). The distribution area is in the Caucasus .
description
The Caucasian shrub birch is a small tree or tall shrub with silvery gray or slightly pink colored bark and up to the end of the growing season densely hairy, covered with a few light warts. The leaves are broadly ovate, 3 to 5 centimeters long, pointed with a rounded or slightly heart-shaped base and an irregular, roughly sawn edge. The upper side of the leaf is matt dark green and slightly hairy, the underside is hairy. 6 to 7 pairs of nerves are formed per leaf. The hairy petiole is about 0.6 to 1.2 inches long. The female inflorescences are upright, 2 to 4 centimeters long, ellipsoidal catkins . The tips of the fruit scales stand upright, the middle one is twice as long as the one on the side.
Distribution and ecology
The distribution area is in the Caucasus. There it grows in cool, moist forests, on nutrient-rich, acidic to weakly alkaline, humus-rich, sandy-loamy to loamy soils in sunny to light-shaded locations. The species is frost hardy.
Systematics and research history
The Caucasian shrub birch ( Betula Raddeana ) is a kind of the genus of birch ( Betula ) in the family of birch family (Betulaceae). It was first described in 1887 by Ernst Rudolph von Trautvetter in the Trudy Imperatorskago S.-Peterburgskago Botaniceskago Sada. Acta Horti Petropolitani. St. Petersburg .
use
The species is rarely used.
proof
literature
- Andreas Roloff , Andreas Bärtels: Flora of the woods. Purpose, properties and use. With a winter key from Bernd Schulz. 3rd, corrected edition. Eugen Ulmer, Stuttgart (Hohenheim) 2008, ISBN 978-3-8001-5614-6 , pp. 142-143.
Individual evidence
- ↑ German name after Roloff et al .: Flora der Gehölze , p. 142
- ↑ a b c Roloff et al .: Flora of the Woods , pp. 142–143
- ↑ Betula raddeana. In: Germplasm Resources Information Network (GRIN). United States Department of Agriculture, accessed December 29, 2011 .
Web links
- Betula raddeana inthe IUCN Red List of Threatened Species 2013.2. Listed by: Firsov, GA, 1998. Retrieved December 12, 2013.