Roller sedge

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Roller sedge
Long-legged sedge (Carex elongata)

Long-legged sedge ( Carex elongata )

Systematics
Monocots
Commelinids
Order : Sweet grass (Poales)
Family : Sourgrass family (Cyperaceae)
Genre : Sedges ( Carex )
Type : Roller sedge
Scientific name
Carex elongata
L.

The roller sedge or long-lasting sedge ( Carex elongata ) is a species of the genus of the sedge ( Carex ) within the sour grass family (Cyperaceae). It is common in Eurasia .

description

illustration
horst
Fruit cluster

Vegetative characteristics

The roller sedge is a perennial herbaceous plant . It often forms clumps . The 2 to 4 mm wide leaves are about as long as the stem. The clearly triangular stem is only leafed in the lower area.

Generative characteristics

The inflorescence is never surmounted by a bract envelope. The ears, which are closely approximated, are piled up to eight to twenty. The female spikelets can be found at the top and the male spikelets at the bottom. The lanceolate indistinctly bidentate winged tubes, which are weak on the inside, but strongly arched on the outside, protrude strongly beyond the husks.

The number of chromosomes is 2n = approx. 56.

ecology

It also reproduces vegetatively with the help of its rhizome .

The flowering period extends from late April to June. The pollination is carried by the wind ( anemophily ). The floating diaspores are spread out by the water ( hydrochory ). Most of the seeds only germinate in the next spring and only partly after sowing.

Occurrence

The roller sedge thrives in the temperate and boreal zones of Eurasia . It is distributed from Ireland and France in the west to Lake Baikal in Siberia in the east, and it occurs in parts of western Asia . In Europe , its area extends in the north to northern Fennoscandia (where it is absent in the Arctic region), further to southern Europe , where it is rarely found, and it also occurs in the Caucasus .

The roller sedge is quite rare in the middle and high mountains of Germany. It occurs frequently in the Central European lowlands , but is rare in the middle altitudes there; it is very rare in the Alps , where it is absent over long stretches. It hardly rises to altitudes above 1000 meters. In the Allgäu Alps, near the Walserschanze in Breitach Valley in Bavaria , it rises up to 1050 m above sea level. It often forms small populations where it was found.

The roller sedge inhabits alluvial forests, ditches and banks in Central Europe , but it also lives in litter meadows . In Germany it occurs only scattered on the partly flooded banks of water, in moors or other small sedge areas. In alder stocks , it is a pointer plant for waterlogging. Carex elongata is the name- giving association characteristic of the roller sedge-alder quarry forests (Carici elongatae-Alnetum glutinosae). It grows on waterlogged, occasionally flooded soils , which can consist of shallow sand over impermeable rock as well as loam or clay .

literature

  • Rudolf Schubert, Walter Vent (Ed.): Excursion flora from Germany. Founded by Werner Rothmaler. 8th edition (new edition). Volume 4: Vascular Plants: Critical Volume, Gustav Fischer, Jena 1994, ISBN 3-334-60830-1 .
  • E. Foerster: Sedges, rushes, ledges and other mock grasses of grassland - a key to determining in the flowerless state. Manuscript, Kleve-Kellen March 1982.
  • Oskar Sebald, Siegmund Seybold, Georg Philippi, Arno Wörz (eds.): The fern and flowering plants of Baden-Württemberg . tape 8 : Special part (Spermatophyta, subclasses Commelinidae part 2, Arecidae, Liliidae part 2): Juncaceae to Orchidaceae . Eugen Ulmer, Stuttgart (Hohenheim) 1998, ISBN 3-8001-3359-8 .
  • Dietmar Aichele, Heinz-Werner Schwegler: The flowering plants of Central Europe . 2nd Edition. tape 5 : Swan flowers to duckweed plants . Franckh-Kosmos, Stuttgart 2000, ISBN 3-440-08048-X .

Individual evidence

  1. ^ 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. 176 .
  2. ↑ Erhard Dörr, Wolfgang Lippert : Flora of the Allgäu and its surroundings. Volume 1, IHW, Eching 2001, ISBN 3-930167-50-6 .

Web links

Commons : Carex elongata  - album with pictures, videos and audio files