White sedge

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White sedge
White sedge (Carex alba)

White sedge ( Carex alba )

Systematics
Monocots
Commelinids
Order : Sweet grass (Poales)
Family : Sourgrass family (Cyperaceae)
Genre : Sedges ( Carex )
Type : White sedge
Scientific name
Carex alba
Scop.

The white sedge ( Carex alba ) is a species of sedge ( Carex ) native to Central Europe . It is a variegated sedge.

description

The white sedge is a perennial plant with longer runners, at the nodes there are tufts of stems and sterile shoots. It becomes 10 to 40 cm high. The stems are erect, thin, blunt-edged and rough. The leaves are evergreen, 1 to 2 mm wide, bristly folded and green. They are bald, limp, and sharp and rough around the edges. They are shorter than the stem. The basal sheaths are yellowish-brown and disintegrate lobed.

There is a terminal male spikelet and one to three female spikelets. The latter have three to six loosely standing flowers, are up to 10 mm long, stalked and upright when the fruit is ripe. The top female culminates at the end of the male. The bracts have no leaf blade , just a 1 cm long and white-skinned leaf sheath . The bracts are glossy white and have a green central stripe. They are much shorter than the fruit. The stylus has three scars .

The fruit is 3 to 4 mm long, spherical to ovoid and glabrous. It is glossy dark brown, veined and abruptly short-skinned.

The chromosome number of the species is 2n = 54.

White sedge ( Carex alba ), blooming
White sedge ( Carex alba ), fruiting

distribution

The species is native to Europe and Siberia and is a submeridional-montane to boreal, continental flora element. It grows in warmth-loving forests and is limestone. It is widespread in the Alps and in the foreland, otherwise rather rare.

Locations and distribution in Central Europe

The white sedge needs loose, base-rich and especially lime-rich soil. She is loving some warmth. She is more likely to endure temporary drought than wetness; she prefers partial shade.

It colonizes light deciduous forests, coniferous forests and alpine dwarf shrub bushes, provided these are in the area of ​​the forest level. It is one of the common species in the carbonate fir beech forest with a white harrow .

It occurs sporadically on the Edersee ; They are rarely found in the Franconian Jura, on the Upper Rhine, on both sides of the Upper Danube, in the Swiss Jura and in the Central Plateau; in the foothills of the Alps and in the Limestone Alps it occurs in a scattered manner. It usually forms smaller stocks at its locations. It usually stays below 1500 m above sea level. In the Allgäu Alps, however, it rises in the Tyrolean part of the Hahlekopf near Reutte up to 1700 m above sea level.

General distribution

The white sedge is a prealpid northern continental flora element. It occurs from the eastern Pyrenees across south- eastern France to southern central Europe with the Alps ; to the south their area extends only to northern Italy, to the south-east to Romania, through Eastern Europe to northern Russia, the Ural Mountains and to Far Eastern Asiatic Russia.

literature

  • Rudolf Schubert , Klaus Werner, Hermann Meusel (eds.): Excursion flora for the areas of the GDR and the FRG . Founded by Werner Rothmaler. 13th edition. tape 2 : vascular plants . People and knowledge, Berlin 1987, ISBN 3-06-012539-2 (area).
  • Siegmund Seybold (Ed.): Schmeil-Fitschen interactive . CD-ROM, version 1.1. Quelle & Meyer, Wiebelsheim 2002, ISBN 3-494-01327-6 .
  • Aichele / Schwegler: The flowering plants of Central Europe, Franckh-Kosmos-Verlag, 2nd revised edition 1994, 2000, volume 5, ISBN 3 440-08048-X
  • Oskar Sebald, Siegmund Seybold, Georg Philippi, Arno Wörz (eds.): The fern and flowering plants of Baden-Württemberg. Volume 8: Special part (Spermatophyta, subclasses Commelinidae part 2, Arecidae, Liliidae part 2): Juncaceae to Orchidaceae. Eugen Ulmer, Stuttgart 1998, ISBN 3-8001-3359-8 .

Individual evidence

  1. ^ Erich Oberdorfer : Plant-sociological excursion flora for Germany and neighboring areas . 8th edition. Stuttgart, Verlag Eugen Ulmer, 2001. ISBN 3-8001-3131-5 . Page 187.
  2. ↑ Specialized agency for mountain forest maintenance (CH): Types of locations of the fir-beech forests of the upper montane level. Retrieved March 30, 2015 .
  3. ↑ Erhard Dörr, Wolfgang Lippert : Flora of the Allgäu and its surroundings. Volume 1, IHW, Eching 2001, ISBN 3-930167-50-6 .
  4. ↑ Rafaël Govaerts (ed.): Carex alba. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved October 16, 2016.

Web links

Commons : White Sedge ( Carex alba )  - Album with pictures, videos and audio files