Thread-rooted sedge

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Thread-rooted sedge
Thread-rooted sedge (Carex chordorrhiza)

Thread-rooted sedge ( Carex chordorrhiza )

Systematics
Monocots
Commelinids
Order : Sweet grass (Poales)
Family : Sourgrass family (Cyperaceae)
Genre : Sedges ( Carex )
Type : Thread-rooted sedge
Scientific name
Carex chordorrhiza
L. f.

The thread-rooted sedge ( Carex chordorrhiza ), also called tendril sedge or knitted sedge , is a species of the genus sedge ( Carex ) within the sourgrass family (Cyperaceae).

description

Illustration: Left Carex chordorrhiza

Vegetative characteristics

The thread-rooted sedge grows as a perennial herbaceous plant and reaches heights of 10 to 25 centimeters. It forms long runners above ground and rooted at the nodes . The flowering shoot axes are upright to ascending, smooth and rounded to slightly triangular.

Generative characteristics

The flowering time is in June. The terminal inflorescence is ovate with few and densely arranged spikelets . Stunted forms often have only one spikelet. The tubes are reddish brown, 3.5 to 4 millimeters long, and often stunted. There are two scars.

The number of chromosomes is 2n = 60.

Occurrence

The thread-rooted sedge is circumpolar widespread in the arctic to boreal zones. Further south in the temperate zones there are scattered, often extinct deposits. In Central Europe , they are mainly found in the moors of the Alpine foothills. The southernmost occurrences are in Spain and in the Caucasus region .

In Central Europe, the thread-rooted sedge occurs occasionally in the moor areas of the Central European lowlands. It is very rarely found in the Franconian Jura, in the Bavarian Forest, in the German and Austrian Alpine foothills, in the northern and southern peripheral zones of the Alps, in northern Switzerland and in the Swiss Jura. It rarely rises to altitudes of 1000 meters. In the Allgäu Alps in Bavaria, it rises in the Straussbergmoos near Imberg to an altitude of 1200 meters.

The thread-rooted sedge needs sometimes flooded, open and muddy, moderately alkaline , sometimes calcareous clay soils . It thrives in the gullies of flat and intermediate moors . It is a glacial relic in Central Europe . It is characteristic species of Drepanoclado-Caricetum chordorrhizae from the Association Caricion lasiocarpae.

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literature

  • Henning Haeupler, Thomas Muer: picture atlas of the fern and flowering plants of Germany . Published by the Federal Agency for Nature Conservation (=  The fern and flowering plants of Germany . Volume 2 ). 2nd corrected and enlarged edition. Eugen Ulmer, Stuttgart (Hohenheim) 2007, ISBN 978-3-8001-4990-2 .
  • 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. ^ Carex chordorrhiza Lf, Filamentous sedge. In: FloraWeb.de.
  2. ↑ 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. 174 .
  3. ↑ Erhard Dörr, Wolfgang Lippert : Flora of the Allgäu and its surroundings. Volume 1, IHW, Eching near Munich 2001, ISBN 3-930167-50-6 , p. 243.

Web links

Commons : Filiform sedge ( Carex chordorrhiza )  - Collection of images