Finger sedge

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Finger sedge
Finger sedge (Carex digitata)

Finger sedge ( Carex digitata )

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

The finger sedge ( Carex digitata ) is a species of the sour grass family (Cyperaceae).

description

The finger sedge is an evergreen, perennial herbaceous plant that reaches heights of about 10 to 30 centimeters. This type of plant does not form runners, but small clumps. Their leaf sheaths are characteristically purple in color. The dark green leaves are 2 to 4 mm wide.

Finger sedge ( Carex digitata ), illustration
Purple lowest leaf sheaths
Bract of the lowest ear with a subtle tip
Inflorescence with a ♂-ear and several ♀-ears
Female ear
Hairy tube with cover sheet
Finger sedge ( Carex digitata )

The finger sedge forms an inflorescence , which consists of a terminal, stalked male and about 2 to 5 female ears , often spaced apart . Each ear consists of five to ten flower-spikelets. The lowest stalked ear is set down below. The top one or two female ears protrude above the male ear. In each flower spikelet there are about 4 mm long tubes, which are particularly hairy towards the tip and shine light brown when ripe. The toothed husks are colored reddish brown. There are always three stigmas in each flower .

The number of chromosomes is 2n = 48, 50, 52 or 54.

ecology

The finger sedge blooms from April to May; the fruit ripens from May to June. Their flowers are pollinated by the wind ( anemophilia ), their seeds are spread by ants ( myrmecochory ). However, it also reproduces vegetatively with the help of its rhizome .

The seeds dormancy for 2 years. The individual plants are 5 to 10 years old.

Occurrence

General distribution

The finger sedge is a Eurasian suboceanic flora element. It occurs in most of Europe; but it is absent in Ireland, Iceland, northern Scandinavia and the Mediterranean region proper. To the east, its area extends to western Siberia , to the Caucasus , to northeast Anatolia and to northern Iran. In southern Germany the finger sedge occurs relatively frequently, in central and northern Germany, on the other hand, only scattered or rarely. In the lime-rich areas of Central Europe it occurs scattered, in the Central European lowlands it is rare, it is almost entirely absent here west of the Elbe .

It colonizes deciduous and mixed forests with stony, but on the whole deep soil in warm locations. In the Alps it also goes on shady mats and in deep, fine crevices. But it hardly rises above the tree line. In the Allgäu Alps, it rises in the Tyrolean part of the Schlicke up to 1900 m above sea level. It usually forms small populations where it is found. The finger sedge is a weak character species of the Querco-Fagetea class in Central Europe.

The finger sedge needs base-rich, loose, well-decomposing muddy loam soil, which may be low in lime, half-shaded and well-ventilated and at times damp, but not waterlogging.

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. Kleve-Kellen manuscript, March 1982.
  • Jürke Grau , Bruno P. Kremer, Bodo M. Möseler, Gerhard Rambold, Dagmar Triebel: Grasses. Sweet grasses, sour grasses, rushes and grass-like families in Europe (=  Steinbach's natural guide ). New, edit. Special edition edition. Mosaik, Munich 1996, ISBN 3-576-10702-9 .
  • 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 .

Individual evidence

  1. a b 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. a b c d e f 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 , p. 286 .
  3. Erhard Dörr, Wolfgang Lippert : Flora of the Allgäu and its surroundings. Volume 1, IHW, Eching 2001, ISBN 3-930167-50-6 , p. 268.

Web links

Commons : Finger Sedge  - album containing pictures, videos and audio files

Photos: