Small awn sedge

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Small awn sedge
Little awn sedge (Carex microglochin), illustration

Little awn sedge ( Carex microglochin ), illustration

Systematics
Monocots
Commelinids
Order : Sweet grass (Poales)
Family : Sourgrass family (Cyperaceae)
Genre : Sedges ( Carex )
Type : Small awn sedge
Scientific name
Carex microglochin
Election b.

The small awn sedge ( Carex microglochin ), also known as small awn sedge , is a species of the genus sedge ( Carex ) within the sour grass family (Cyperaceae). It is common in the northern hemisphere in Eurasia and North America .

description

Vegetative characteristics

The little awn sedge grows as a perennial herbaceous plant and reaches heights of 5 to 25 centimeters. Their rhizome drives underground runners . The stem is erect, smooth, less than 1 millimeter thick and rounded or bluntly triangular. The leaf blades are narrow and bristle-shaped and only a quarter to half as long as the stem.

Generative characteristics

The flowering period extends from May to July. As an inflorescence , the little awn-sedge only bears a single ear, which is about 8 to 15 millimeters long. In the lower part it bears 3 to 17 female flowers , above 5 to 6 male flowers. The husks are dark brown with a white skin edge and green central veins. The tubes are narrowly conical, finally turned down and 4 to 6 millimeters long. The tip of the axis protrudes from the fruit tube , the hallmark of the species.

The number of chromosomes is 2n = 48 or 58.

Occurrence

The distribution area of the lesser awn sedge extends from Northern Europe and the Alps and Carpathians to the Caucasus , Siberia , Central Asia , China to Greenland and North America . It also occurs from Ecuador to southern South America . The main distribution area of ​​the lesser awn sedge in Europe is in Scandinavia (south to 60 ° north latitude), in Iceland and in Scotland .

The species is very rare in Central Europe and has been in decline for a long time; it is an ice age relic here . The Central European locations of the Kleiner Grannen-Sedge are essentially limited to the Alpine foothills and the cantons of Unterwalden , Appenzell and Graubünden . From there, the little awns-sedge partially disappeared in the last century. It does not appear to have occurred in Germany since the Second World War . In Säntis , Valais , Savoy , South Tyrol and Ticino it may still be found occasionally.

It occurs in low bogs and spring bogs , also on gravel banks of streams. It rises in the Alps to altitudes of 2700 meters. It is a species of the Caricion bicoloris-atrofuscae association.

The small awn-sedge grows on base-rich, mostly calcareous , trickled, oozing, loose, clay-sandy, peaty soils ; she prefers sand or sandy clays as the substrate .

Taxonomy

Carex microglochin was first published in 1803 by Göran Wahlenberg . The specific epithet microglochin means "small tip".

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).
  • 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. 322 (English, limited preview in Google Book Search).
  • 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. ^ Tropicos. [1]
  2. ↑ Rafaël Govaerts (Ed.): Carex - data sheet at World Checklist of Selected Plant Families of the Board of Trustees of the Royal Botanic Gardens, Kew. Last accessed on October 14, 2016.
  3. ^ 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.  168 .

Web links

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