Sorbus austriaca

The Austrian Whitebeam (Sorbus austriaca ), also Eastern Alps - Whitebeam Whitebeam Alpine and Alpine Oxelbirne called, is a species of the genus of haws (Sorbus ) in the rose family ( Rosaceae ). Within the haws it belongs to the Sorbus mougeotii group.

Features

The species is to be distinguished mougeotii in the following characteristics of Sorbus:

The leaves are broad oval to almost circular, wider and larger as a whole. They are 8 to 11 inches long and about 9 inches wide. The ratio of length to width is about 1.5. The leaf base is wide - wedge-shaped. Towards the bottom lobes are present, up to 1/6 cut the leaf blade are cut and overlap partially. Towards the peak, the sheet is shallow lobed, doubly serrate only at the tip itself.

The fruits are 10 to 13 millimeters long, 13 millimeters thick, spherical and usually larger. They come with many large lenticels.

In contrast to representatives of Sorbus aria group, whose leaves also have a cut edge, the leaves of Sorbus austriaca have thicker hair and less pointed branching lateral nerves. At least in some of the sheets of the lower half of blade angle is about 60 ° or more.

The flowering period extends from May to June. Fruit ripening is from June through September and is 3 weeks before of Sorbus aria.

Occurrence

The Austrian Whitebeam comes from the Eastern Alps prior to the Carpathians and the Illyrian mountains. To the west, the area may be sufficient to Vorarlberg. For the Apennines and Greece are older, unconfirmed reports.

The habitat of the Austrian Whitebeam are forests and bushy slopes in the Alps and foothills up to the krummholz region inside. The highest localities in about 1700 meters are in Styria, Upper and Lower Austria. The type has similar habitat requirements as Sorbus mougeotii and is also kalkliebend, unlike this type but not kalkstet.

Documents

• Herfried Kutzelnigg: Sorbus. In: Hans. J. et al Conert (Ed.): Gustav Hegi. Illustrated Flora of Central Europe. Volume 4 Part 2B: Spermatophyta: Angiospermae: Dicotyledones 2 (3). Rosaceae 2 Blackwell 1995, ISBN 3-8263-2533-8, pp. 381-382.