Ice sedge

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Ice sedge
Left illustration of the ice sedge (Carex frigida), right the cushion sedge (Carex firma)

Left illustration of the ice sedge ( Carex frigida ), right the cushion sedge ( Carex firma )

Systematics
Monocots
Commelinids
Order : Sweet grass (Poales)
Family : Sourgrass family (Cyperaceae)
Genre : Sedges ( Carex )
Type : Ice sedge
Scientific name
Carex frigida
Alles.

The ice sedge ( Carex frigida ) is a species of the genus of the sedge ( Carex ) and thus the family of the sour grass plants (Cyperaceae).

description

Vegetative characteristics

The ice sedge is a perennial herbaceous plant that reaches heights of 20 to 75 centimeters. It forms runners up to 10 centimeters long . Their upright, often overhanging stems are triangular and about 1 millimeter thick. The leaves are 2 to 4 millimeters wide.

Generative characteristics

The flowering period is between June and August. The bracts of the inflorescence do not protrude above it. The inflorescence contains one, rarely two male spikelets at the top and three to four lateral female spikelets below. The female spikelets are stalked to sessile and 15 to 30 millimeters long and up to 8 millimeters thick. The male spikelet is 15 to 20 millimeters long and up to 4 millimeters thick. The husks of the female ears are pointed or prickly, dark red-brown with a green central stripe. The tubes are 5 to 7 millimeters long, bare, ciliate on the sides and gradually narrowed into a two-toothed beak. The female flowers have three stigmas.

The yellow-brown fruit when ripe is about 1 millimeter long.

The number of chromosomes is 2n = 56 or 58.

Occurrence

The distribution area of the ice sedge is limited to Europe, where it occurs from Corsica , the Pyrenees and the Alps to the Black Forest , the Apennines and Montenegro . It is very rare in Central Europe , but it usually forms smaller populations there at its locations.

It has its main occurrence in Central Europe at altitudes of 1300 to 2500 meters. In the Allgäu Alps, it rises at altitudes of 1300 meters above the Stuibenfall in Bavaria up to an altitude of 2100 meters. In the Eastern Alps it is absent in some areas; in the Black Forest it occurs only in the Feldberg area. It is a mountain plant that rarely descends to altitudes of 500 meters; in the Alps it occurs up to an altitude of 2800 meters. In Germany it occurs only in the Bavarian Alps and in the Feldberg area.

The ice sedge thrives on soaky, mostly base-rich, often low-lime, loamy, sandy or stone soils . You Carex frigida a Kennart of Caricetum frigidae (Caricion davallianae).

The ice-sedge usually thrives on sites that are flown through, seeped through or sprayed along streams, in alpine and sub-alpine trickle meadows in the higher elevations of the low mountain ranges or the Alps . It colonizes swelling areas, small rinks or snow valleys .

Taxonomy

Carex frigida was first published in 1785 by Carlo Allioni . The specific epithet frigida means "cold" and relates to the location.

literature

  • Wolfram Schultze Motel (Ed.): Illustrated flora of Central Europe. Pteridophyta, Spermatophyta . Founded by Gustav Hegi. 3rd, completely revised edition. Volume II. Part 1: Angiospermae: Monocotyledones 2 (Cyperaceae - Juncaceae) . Paul Parey, Berlin / Hamburg 1980, ISBN 3-489-54020-4 (published in deliveries 1967–1980).
  • Arthur Oliver Chater : Carex. In: TG Tutin, VH Heywood, NA Burges, DM Moore, DH Valentine, SM Walters, DA Webb (eds.): Flora Europaea . Volume 5: Alismataceae to Orchidaceae (Monocotyledones) . Cambridge University Press, Cambridge 1980, ISBN 0-521-20108-X , pp. 290-323 (English).

Individual evidence

  1. ↑ 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.  188-189 .
  2. ↑ Erhard Dörr, Wolfgang Lippert : Flora of the Allgäu and its surroundings. Volume 1, IHW-Verlag, Eching near Munich, 2001, ISBN 3-930167-50-6 , p. 274.
  3. ↑ a b c 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 .

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