Small awn sedge
Small awn sedge | ||||||||||||
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Little awn sedge ( Carex microglochin ), illustration |
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Systematics | ||||||||||||
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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
- ^ Tropicos. [1]
- ↑ 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.
- ^ 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
- Carex microglochin Wahlenb., Kleingrannige Sedge. In: FloraWeb.de.
- Profile and distribution map for Bavaria . In: Botanical Information Hub of Bavaria .
- Small awn sedge . In: BiolFlor, the database of biological-ecological characteristics of the flora of Germany.
- Carex microglochin options b. In: Info Flora , the national data and information center for Swiss flora .
- Distribution in the northern hemisphere from: Eric Hultén, Magnus Fries: Atlas of North European vascular plants. 1986, ISBN 3-87429-263-0 at Den virtuella floran. (swed.)
- Thomas Meyer: Data sheet with identification key and photos at Flora-de: Flora von Deutschland (old name of the website: Flowers in Swabia )
- Photos: habitat , population , inflorescence