Haller's sedge

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Haller's sedge
Haller's sedge (Carex halleriana)

Haller's sedge ( Carex halleriana )

Systematics
Monocots
Commelinids
Order : Sweet grass (Poales)
Family : Sourgrass family (Cyperaceae)
Genre : Sedges ( Carex )
Type : Haller's sedge
Scientific name
Carex halleriana
Asso

Haller's sedge ( Carex halleriana ), also known as the stem-stemmed sedge , is a species of sedge ( Carex ) within the sour grass family (Cyperaceae).

description

Habitus
Male spikelet

Vegetative characteristics

Haller's sedge is a perennial herbaceous plant and reaches heights of 10 to 40 centimeters. It forms densely grassed stands through crooked rhizomes . The stem is slender and triangular. At its base there are frayed, dark brown leaf sheaths, at the top it is rough. The leaves are about as long as the stem and relatively narrow with a width of 1 to 2.5 millimeters.

Generative characteristics

The flowering period extends from March to June. Haller's sedge is a multi-year sedge. There are one to six female spikelets , each containing about ten flowers and with a length of 6 to 15 millimeters broad-ovoid. The upper one to three female spikelets are almost sessile and approached to the male spikelet. The lower one to three female spikelets stand on up to 17 centimeters long, thin stems and arise at the base of the stem. The husks are red-brown in color, their edge is light and their central stripe is green. They are pointed, ovate-lanceolate and about as long as the sacs. The fruit sacs are 3 to 4 millimeters long, beaked short and hairy. The single male spikelet is 5 to 25 millimeters long, 1 to 4 millimeters wide, sessile to short stalked.

The number of chromosomes is 2n = 50, 52 or 54.

Occurrence

Haller's sedge occurs from the Mediterranean to Central Europe and Afghanistan . Occasionally it occurs in the warmest locations in the Alps , at the foot of the Alps , in the Swiss Jura , on the Isteiner Klotz and near Bad Kreuznach.

It grows in bushes, sparse forests and on rocky slopes. Haller's sedge thrives best on shallow, stony, dry, lime- rich and alkaline soils , in very warm locations . It occurs in Central Europe in plant communities of the associations Berberidion, Geranion sanguinei, Xerobromion, Quercion pubescentis and Carpinion.

Taxonomy

Carex halleriana was first published in 1779 by Ignacio Jordán de Asso y del Río . Synonyms for Carex halleriana Asso are: Carex alpestris All. , Carex gynobasis Chaix , Carex tenuifolia Poir. , Carex rhizantha J.F. Gmel. , Carex ptychocarpa Link , Carex diversiflora host . The specific epithet halleriana honors the Swiss physician and botanist Albrecht von Haller (1708–1777).

supporting documents

literature

  • Ehrentraud Bayer, Karl Peter Buttler, Xaver Finkenzeller, Jürke Grau: Plants of the Mediterranean (=  Steinbach's natural guide . Volume 17 ). Mosaik, Munich 1987, ISBN 3-570-01347-2 , p. 264 .

Individual evidence

  1. ↑ Carex halleriana Asso, Pedunculated Sedge. In: FloraWeb.de.
  2. ↑ 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. 186 .
  3. ↑ a b Rafaël Govaerts (Ed.): Carex halleriana. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved October 20, 2016.
  4. ↑ Isteiner Klotz at www.regionatur.ch , accessed on June 19, 2016
  5. ↑ 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. 280 .

Web links

Commons : Haller's Sedge ( Carex halleriana )  - album with pictures, videos and audio files