Head sedge

Head sedge
	Head sedge ( Carex capitata ), illustration
Systematics
	Monocots
	Commelinids
Order :	Sweet grass (Poales)
Family :	Sourgrass family (Cyperaceae)
Genre :	Sedges ( Carex )
Type :	Head sedge
Scientific name
	Carex capitata
	L.

The head sedge ( Carex capitata ) is a species of the genus of the sedges ( Carex ) within the sour grass family (Cyperaceae). It is common in the northern hemisphere in Eurasia and North America .

description

Carex capitata in the botanical garden

Each fruit cluster includes only one spikelet

The head sedge is a deciduous, perennial herbaceous plant and reaches heights of 15 to 25 centimeters. It has no runners and forms small, firm clumps . The rigid upright stems are triangular and palpably rough under the inflorescence.

The head sedge is a one-year sedge. The densely flowered spikelet is spherical with a length of up to 8 millimeters. The tubes are 2.3 to 3 millimeters long and up to 2 millimeters wide, they terminate in a short beak that is longer than the husks . There are two scars.

The number of chromosomes is 2n = 50.

ecology

The head sedge is a hemicryptophyte . The flowering period extends from May to June.

Occurrence

Carex capitata is widespread in the northern hemisphere in Eurasia and North America . In Scandinavia , the head sedge is still a stock-forming plant. In Central Europe , the head sedge must be viewed as an Ice Age relic . It thrives in societies of the order Tofieldietalia. It has been rare in Central Europe since the turn of the century and is only known from a few sites in the foothills of the Alps and from Tyrol . The head sedge was presumably destroyed outside the Alps by draining bogs, and today it presumably no longer has a permanent place of growth in Central Europe . In the Red List of Endangered Plant Species in Germany, the head sedge was rated as extinct or lost in 1996. The locations in the Bavarian Alpine Foreland and in the Lake Constance area have certainly not been confirmed since around 1950. There may still be deposits near Nauders in the upper Inn Valley.

The head sedge grows on wet, moderately acidic, but nutrient-rich soil. It therefore mainly inhabits intermediate and flat moors , but it also goes into gullies in young raised moors .

Although resettlement is unlikely, it should not be ruled out entirely as its fruits are spread by migrating water birds .

The pointer values according to Ellenberg are: light number L9 = full light plant; Temperature figure T4 = moderate heat to cool pointer; Continental number K7 = subcontinental to continental, showing moderate steppe to steppe climate; Humidity figure F8w = humidity to wetness indicator; Change of humidity = showing strongly changing humidity, humidity indicator; Reaction number R7 = weak acid to weak base pointer; Nitrogen number N1 = showing locations with the lowest nitrogen levels; Salt number S0 = not bearing salt; Heavy metal resistance = not heavy metal resistant.

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 .

Individual evidence

↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j head sedge. In: FloraWeb.de.
↑ ^a ^b ^c ^d ^e Profile of the vascular plants of Bavaria of the Botanical Information Node Bavaria .
↑ ^a ^b 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. (swedish).
↑ ^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. 169 .
↑ ^a ^b ^c ^d ^e ^f ^g ^h 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. 244 .

Web links

Commons : Head sedge ( Carex capitata ) - Collection of images, videos and audio files

Head 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 capitata L. In: Info Flora , the national data and information center for Swiss flora .
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]

[FloraWeb-1] ↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j head sedge. In: FloraWeb.de.

[BIB-2] Profile of the vascular plants of Bavaria of the Botanical Information Node Bavaria .

[DenVirtuellaFloran-3] 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. (swedish).

[Oberdorfer2001-4] 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. 169 .

[Aichele_2000-5] ↑ ^a ^b ^c ^d ^e ^f ^g ^h 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. 244 .