Dull sedge

Dull sedge
	Blunt sedge ( Carex obtusata )
Systematics
	Monocots
	Commelinids
Order :	Sweet grass (Poales)
Family :	Sourgrass family (Cyperaceae)
Genre :	Sedges ( Carex )
Type :	Dull sedge
Scientific name
	Carex obtusata
	Liljeblad

The blunt sedge ( Carex obtusata ) is a species of the genus Seggen ( Carex ) within the sour grass family (Cyperaceae).

description

The blunt sedge is a perennial herbaceous plant that reaches heights of 5 to 5 centimeters. From the rhizome drive spurs , which are usually more than 2 cm long, and can surpass cm in extreme cases even five lengths. The lower leaves on the foothills are conspicuously black and red. The stem is thin, upright, clearly triangular, rough under the inflorescence and as long or slightly longer than the leaves. The leaves are about 1 to 1.5 mm wide, flat, and mostly smooth.

The flowering period extends from April to May. It has a single terminal spikelet up to 1.5 cm long . The hoses are almost always stunted and atypical. When well developed, they are 2.5 to 3.5 mm long, brown, intensely shiny and suddenly contracted into the short beak . There are three scars .

The number of chromosomes is 2n = 52.

Occurrence

Their main distribution area is in the temperate arctic areas of the northern hemisphere . Locations outside of Europe are known in Canada and the United States. In Europe there are even larger deposits in Sweden (including the island of Öland ) and in Russia . It is absent in Norway and Finland. In Central Europe, the blunt sedge is rightly considered a Nordic relic plant from the glaciation periods of the Ice Age . The blunt sedge is endangered in Central Europe . The blunt sedge reaches the most south-westerly point of its occurrence in Brandenburg .

The dull sedge thrives best on very loose, dry, fine sandy soils . It grows in loose grass .

literature

Henning Haeupler, Thomas Muer: picture atlas of the fern and flowering plants of Germany . Published by the Federal Agency for Nature Conservation (= The fern and flowering plants of Germany . Volume 2 ). 2nd corrected and enlarged edition. Eugen Ulmer, Stuttgart (Hohenheim) 2007, ISBN 978-3-8001-4990-2 .
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 .

Individual evidence

^ 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 .
↑ 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.

Web links

Commons : Blunt Sedge ( Carex obtusata ) - Collection of images, videos, and audio files

Dull sedge. In: FloraWeb.de.
Dull sedge . In: BiolFlor, the database of biological-ecological characteristics of the flora of Germany.
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: [1] , [2]

[Oberdorfer2001-1] 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 .

[WCSP-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.