Middle hawthorn
| Middle hawthorn | ||||||||||||
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Middle hawthorn ( Crataegus × media ) |
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| Crataegus × media | ||||||||||||
| Bechst. |
The middle or hybrid hawthorn ( Crataegus × media ) is a species of hawthorn ( Crataegus ) within the rose family (Rosaceae). It is one of six hawthorn species found in Central Europe . He is by forest animals crossing from the intervention leagues ( Crataegus monogyna ) and the two handles leagues Hawthorn ( Crataegus laevigata originated).
description
The middle hawthorn is a shrub or rarely a small tree and often has thorny short shoots. Its leaves are coarse and hardly lobed or about half lobed. The leaf lobes are usually little and roughly serrated, sometimes their tips are also finely serrated, otherwise they have entire margins. The underside of the leaf is usually light bluish green. The stipules of blooming short shoots are usually fine and more or less densely toothed, sometimes glands are also present. The flowers are one or two grooves. The flower cup is bald or hairy. The sepals are often short-haired on the surface and always triangular. They are usually as wide as they are long, and in rare cases they can be twice as long as they are wide. They have a rounded or blunt tip, which is rarely short and bluntly narrowed. The fruits are single or double-seeded, rounded to rounded and dark red or sometimes light red in color.
The number of chromosomes is 2n = 34.
The flowering period extends from May to June.
Occurrence
The area of the middle hawthorn corresponds to that of its parent species, but it is rarer than these. It grows in natural mixed deciduous forests, hedges, forest edges and on pastures. He is a species of the order Prunetalia. The species colonizes fault zones in the natural vegetation as well as zones in which the ecological conditions change in the smallest of spaces. Like the common hawthorn ( Crataegus monogyna ) it can be found in open places.
Individual evidence
- ↑ a b c Wolfgang Lippert: Crataegus . In: Hans. J. Conert et al. a. (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 .
- ^ Erich Oberdorfer : Plant-sociological excursion flora for Germany and neighboring areas . With the collaboration of Angelika Schwabe and Theo Müller. 8th, heavily revised and expanded edition. Eugen Ulmer, Stuttgart (Hohenheim) 2001, ISBN 3-8001-3131-5 , pp. 508 .
