Harz bedstraw
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Harz bedstraw ( Galium saxatile ) |
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The Harz bedstraw ( Galium saxatile L. ) ( Syn .: Galium hercynicum Weigel , Galium harcynicum Weigel orth. Var.) Is a member of the Rubiaceae family that is widespread in Central Europe.
description
The Harz Bedstraw is a perennial herbaceous plant that usually grows 10 to 30 cm high . The bare and square stem grows either lying down - with non-flowering shoots - or upright - with flowering shoots. When dry, the whole plant becomes more or less black. The finely reticulated and flat foliage leaves are usually attached to the stem in a whorl-shaped group of six. The lower ones are obovate, the upper ones lanceolate. They are single-nerved and widest in the middle. On the edge, they have forward-facing teeth.
The flower stalks are slightly longer than the flowers, whose blunt, four-lobed, white crown reaches a width of two to three mm. The finely pointed black fruit is about 1.5 mm long and sits on straight fruit stalks.
The Harz Bedstraw flowers mainly in July and August.
The number of chromosomes is 2n = 22 or 44.
Distribution and location requirements
The Harz bedstraw occurs in Europe and the Azores. It has its main distribution in Western and Central Europe. The distribution decreases significantly to the east, but extends to central Russia. In Germany, the species is common in the north and west of the area. In addition, it is missing over longer distances. Galium saxatile is rare in Austria and Switzerland .
The Harz bedstraw grows in grass grass, dwarf shrub heaths and in sparse pine, oak and fir forests. It prefers fresh, acidic, lime poor and humus sandy or sandy loam soils. In Central Europe it is a character species of the order Nardetalia, but also occurs in societies of the Quercion roboris, in the Luzulo-Fagetum or Luzulo-Abietum.
Systematics
One can distinguish between two varieties:
- Galium saxatile var. Saxatile : It occurs in Europe and the Azores.
- Galium saxatile var. Vivianum (Kliphuis) Ortega Olive. & Devesa (Syn .: Galium hercynicum subsp. Vivianum Kliphuis ): It occurs in central and northern Portugal and in north-western and central Spain.
literature
- Henning Haeupler, Thomas Muer: picture atlas of the fern and flowering plants of Germany . Ed .: Federal Agency for Nature Conservation (= The fern and flowering plants of Germany . Volume 2 ). Eugen Ulmer, Stuttgart (Hohenheim) 2000, ISBN 3-8001-3364-4 .
- Wolfgang Adler, Karl Oswald, Raimund Fischer: Excursion flora of Austria . Ed .: Manfred A. Fischer. Eugen Ulmer, Stuttgart / Vienna 1994, ISBN 3-8001-3461-6 .
- Christian Heitz: School and excursion flora for Switzerland. Taking into account the border areas. Identification book for wild growing vascular plants . Founded by August Binz. 18th completely revised and expanded edition. Schwabe & Co., Basel 1986, ISBN 3-7965-0832-4 .
- Erich Oberdorfer : Plant-sociological excursion flora . With the collaboration of Theo Müller. 6th, revised and expanded edition. Eugen Ulmer, Stuttgart (Hohenheim) 1990, ISBN 3-8001-3454-3 .
- Konrad von Weihe (ed.): Illustrated flora. Germany and neighboring areas. Vascular cryptogams and flowering plants . Founded by August Garcke. 23rd edition. Paul Parey, Berlin / Hamburg 1972, ISBN 3-489-68034-0 .
Individual evidence
- ↑ a b 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. 768 .
- ↑ a b c Rafaël Govaerts (Ed.): Galium saxatile. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved October 22, 2017.
Web links
- Harz bedstraw. In: FloraWeb.de.
- Harz bedstraw . In: BiolFlor, the database of biological-ecological characteristics of the flora of Germany.
- Galium saxatile L. In: Info Flora , the national data and information center for Swiss flora .
- Distribution in the northern hemisphere from: Eric Hultén, Magnus Fries: Atlas of North European vascular plants. 1986, ISBN 3-87429-263-0 at Den virtuella floran. (swed.)
- Thomas Meyer: Bedstraw data sheet with identification key and photos at Flora-de: Flora von Deutschland (old name of the website: Flowers in Swabia )
