Flea sedge
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Flea Sedge ( Carex pulicaris ) |
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The flea sedge ( Carex pulicaris ) is an endangered one- year sedge in Germany .
description
The flea sedge is only about 5 to 20 cm high and grows in small, loose clumps . The stalk round stem bears a single, about 2 cm long, terminal ear . In the lower area are the female spikelets whose dark brown, elongated - lanceolate tubes are about 5 mm long and are always longer than the husks that have already fallen off when they are mature . During the ripening process, the mature hoses are thrown back. The male spikelets are at the tip of the ear.
The flea sedge blooms in May and June. The number of chromosomes is 2n = 58 or 60.
Occurrence
The flea sedge occurs in the sub - oceanic areas of the temperate to boreal zone of Europe. In Central Europe it is rare in the lowlands and in the low mountain ranges with high rainfall; in the foothills of the Alps it occurs scattered; it sometimes forms smaller stocks at its locations; it is completely absent in large areas of Central Europe.
The flea sedge needs base-rich, mostly calcareous, well-ventilated, wet soil. It therefore prefers sandy-peaty subsoil in which it can root shallowly. It thrives best in springy places or at the outlet of pressurized slope water; also in flat moors and occasionally even in swampy litter meadows and in sparse alluvial forests. It rises in the Alps to the tree line. In the Allgäu Alps, it rises on the Ofterschwanger Horn in Bavaria up to 1,400 meters above sea level. After fertilization with nitrogen, it disappears. It is regarded as Kennart the Association Parnassio-Caricetum fuscae , but also occurs in other associations of the phytosociological association Caricion davallianae ago.
Danger
The sedge species is declining sharply in the Central European lowlands and in large parts of Germany. The flea sedge is threatened above all by the decline in extensive use of fresh and wet meadows, the increasing eutrophication of the soil through fertilizer input through intensive agriculture , and the draining of wet meadows. In some German federal states, the flea sedge is already threatened with extinction. Across Germany, it is currently still classified as Endangered on the Red List of Vascular Plants .
Taxonomy
The scientific name Carex pulicaris was first published in 1753 by Carl von Linné in Species Plantarum .
literature
- Eckehart J. Jäger, Klaus Werner (Ed.): Excursion flora from Germany . Founded by Werner Rothmaler. 10th edited edition. tape 4 : Vascular Plants: Critical Volume . Elsevier, Spektrum Akademischer Verlag, Munich / Heidelberg 2005, ISBN 3-8274-1496-2 .
- E. Foerster: Sedges, rushes, ledges and other mock grasses of grassland - a key to determining in the flowerless state. Manuscript, Kleve-Kellen 1982.
- Dietmar Aichele, Heinz-Werner Schwegler: Our grasses. Sweet grasses, sour grasses, rushes . 11th edition. Kosmos, Stuttgart 1998, ISBN 3-440-07613-X .
- Henning Haeupler, Thomas Muer: picture atlas of the fern and flowering plants of Germany . Ed .: Federal Agency for Nature Conservation (= The fern and flowering plants of Germany . Volume 2 ). Eugen Ulmer, Stuttgart (Hohenheim) 2000, ISBN 3-8001-3364-4 .
Individual evidence
- ↑ a b 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. 246 .
- ↑ Erhard Dörr, Wolfgang Lippert : Flora of the Allgäu and its surroundings. Volume 1, IHW, Eching 2001, ISBN 3-930167-50-6 , p. 239.
- ↑ Carl von Linné: Species Plantarum. Volume 2, Lars Salvius, Stockholm 1753, p. 972 ( digitized version ).
Web links
- Flea sedge. In: FloraWeb.de.
- Flea sedge . In: BiolFlor, the database of biological-ecological characteristics of the flora of Germany.
- Profile and distribution map for Bavaria . In: Botanical Information Hub of Bavaria .
- Carex pulicaris L. 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:
- Günther Blaich: Photos of European plants. Carex pulicaris .
- Gerhard Nitter: Plant Pictures . Carex pulicaris .