Two-tone oak
| Two-tone oak | ||||||||||||
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Two-tone oak ( Quercus bicolor ) |
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| Quercus bicolor | ||||||||||||
| Willd. |
The Quercus bicolor ( Quercus bicolor ) is a deciduous tree - type from the genus of oak ( Quercus ). It got its name because of the different colors of the top and bottom of its leaves.
distribution
The two-tone oak is native to the north-eastern USA south of the Great Lakes, and there is also a small area in the south of the Canadian province of Québec, the Réserve écologique Marcel-Raymond . It prefers the same locations as the swamp oak ( Quercus palustris ), i.e. locations with normal and moderately dry soils near rivers.
The tree is only frost-resistant up to minus fifteen degrees Celsius. Therefore, z. B. in the winter of 1996 at 22 to 23 degrees below zero the two-tone oaks in the mountain garden of Hanover frost damage.
description
As a tree, the two-tone oak grows to a height of 12 to 25 meters. The bark is dark brown to black. Zigzag branches are typical of this type of tree. The two-tone oak is summer green; the obovate-shaped leaves are dark green on top, while the underside is silvery white due to dense hairs. The leaf margins are irregularly lobed. The oval acorns are usually in pairs; they are about an inch long. The two-tone oak grows very slowly and only reaches a height of 21 meters after 65 years.
literature
- Peter Schütt (Hrsg.): Lexicon of forest botany . ecomed, Landsberg / Lech 1992, ISBN 3-609-65800-2 , p. 427.
