Swedish whitebeam
| Swedish whitebeam | ||||||||||||
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Swedish whitebeam ( Sorbus intermedia ), illustration |
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| Sorbus intermedia | ||||||||||||
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The Swedish whitebeam ( Sorbus intermedia ), also Swedish rowan or Oxelbeere is a tree in the genus of haws ( Sorbus ) from the family of the rose family (Rosaceae).
Occurrence
The natural occurrence of the Swedish whitebeam extends to southern Sweden , Denmark (Bornholm Island) , southern Finland , the Baltic States , Poland and northeast Germany . Elsewhere it is planted as an ornamental tree in gardens and parks or used as a street tree.
description
The Swedish whitebeam is a hereditary, tetraploid, apomictic triple bastard ( Sorbus aria × Sorbus aucuparia × Sorbus torminalis ). The number of chromosomes is 2n = 68.
The tree reaches a height of up to 15 meters and forms a dense, uniform crown . The bark is usually gray and smooth with few cracks, the wood is tough and whitish. The up to 10 centimeters long, egg-shaped leaves are lobed to the middle, sawn at the tip. The top is glossy dark green, the underside gray-tomentose. In autumn the leaves turn red. The flowers have a diameter of up to 2 centimeters and are covered with five white petals in panicle-like inflorescences . The plant blooms from May to June. The Swedish whitebeam bears berry-like apple fruits that contain several stones. These are spherical to egg-shaped, up to 1 centimeter thick and orange to red in color. They are edible and have a floury-sweet taste.
use
The wood of the Swedish whitebeam is mainly used to make folding rules , cones and cone balls.
The Swedish whitebeam is a widely used and decorative ornamental and street tree. It often runs wild and is increasingly spreading in Germany.
The fruits are edible. They are mainly used after exposure to frost to make juice, jam and jelly.
literature
- Georg Zauner: Laubbäume , Gräfe and Unzer, Munich 1990, ISBN 3-7742-6205-5 , p. 54f.
- Ruprecht Düll , Herfried Kutzelnigg : Pocket dictionary of plants in Germany and neighboring countries. The most common Central European species in portrait. 7th, corrected and enlarged edition. Quelle & Meyer, Wiebelsheim 2011, ISBN 978-3-494-01424-1 .
Individual evidence
- ^ Erich Oberdorfer : Plant-sociological excursion flora for Germany and neighboring areas . 8th edition. Verlag Eugen Ulmer, Stuttgart 2001, ISBN 3-8001-3131-5 . Page 506.
Web links
- Swedish whitebeam. In: FloraWeb.de.
- Distribution map for Germany. In: Floraweb .
- Distribution in the northern hemisphere according to: Eric Hultén , Magnus Fries: Atlas of North European vascular plants 1986, ISBN 3-87429-263-0
- Thomas Meyer: Data sheet with identification key and photos at Flora-de: Flora von Deutschland (old name of the website: Flowers in Swabia )
- Leaves and fruits of the Swedish whitebeam
- Description of the Swedish whitebeam
