Weeping Sedge

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Weeping Sedge
Weeping Sedge (Carex atrata), illustration

Weeping Sedge ( Carex atrata ), illustration

Systematics
Monocots
Commelinids
Order : Sweet grass (Poales)
Family : Sourgrass family (Cyperaceae)
Genre : Sedges ( Carex )
Type : Weeping Sedge
Scientific name
Carex atrata
L.

The weeping sedge ( Carex atrata ) is a species of sedge ( Carex ) native to Central Europe . She is a sedge of the same age.

description

The weeping sedge is a perennial plant and reaches heights of 15 to 60 cm. The plant grows densely grassed or with only short runners. The leaves are 3 to 9 mm wide and a maximum of half as long as the stem. The basal sheaths are dark brown and not fibrous.

The spikelets are two to six. They are oblong-egg-shaped, the lower ones are petiolate, often nodding. The terminal spikelet has female flowers at the tip and male flowers at the base . The lateral spikelets are purely female, with a short stalk. All spikelets are similar in shape and color. The bracts are black. The stylus has three scars . Flowering time is June to August.

The fruit is 3.5 mm long, ovate to obovate. It is shorter and wider than its bract, has no veins or only vaguely visible veins, is slightly compressed, black to brown, hairless, at most rough. It is suddenly narrowed into the very short, two-toothed beak.

The number of chromosomes is 2n = 54, less often 56.

Occurrence

Their distribution area includes the arctic and temperate mountain zones of Eurasia and Greenland, as well as Iceland, Scandinavia and East Asia. It occurs in the temperate to submeridional high mountains of Europe to Greece (Sterea Ellas). As an arctic-alpine element , it has a circumpolar area as well as disjoint sub-areas in the European high mountains. It is a meridional-alpine to arctic-oceanic floral element.

In the Alps it grows in alpine grasslands, rock corridors, on wind-exposed ridges and in high grass meadows. It thrives on moderately fresh, base-rich but mostly decalcified, neutral, musty-humus, shallow, stony loam and clay soils in high alpine stone lawns, on rocky ridges and ridges that have been sheared by the wind. She is a character species of the Elynetum from the Elynion association. In the Allgäu Alps, Carex atrata subsp. atrata from 1300 meters on the rockslide between Melköde and Auenhütte in Vorarlberg up to 2400 meters above sea level.

Systematics

There are several subspecies:

  • Carex atrata subsp. atrata : The stem is usually only about 30 cm high and is smooth. The leaves are 3 to 5 (to 7) mm wide. The ears are rather upright and 1 to 2 cm long. The last purple-brown tubes are 3 to 3.5 mm long. It comes from in Greenland, in Europe to the Caucasus, and from northeast China to Japan and Taiwan.
  • Carex atrata subsp. aterrima (Hoppe) Hartm. : The stem is usually over 30 cm high and is rough on the top. The leaves are 5 to 11 mm wide. The rather nodding ears are 1.5 to 3.5 cm long. The last mostly black tubes are 3.5 to 4.5 mm long. Some authors also regard it as an independent species: Carex aterrima Hoppe . It occurs from the mountains of Europe to Iran and also on Sakhalin .
  • Carex atrata subsp. longistolonifera (chick.) S.Yun Liang : It occurs in Sichuan.
  • Carex atrata subsp. pullata ( Boott ) chick. : It occurs from the central and eastern Himalayas to Sichuan, Yunnan and Taiwan.

literature

  • Rudolf Schubert , Klaus Werner, Hermann Meusel (eds.): Excursion flora for the areas of the GDR and the FRG . Founded by Werner Rothmaler. 13th edition. tape 2 : vascular plants . People and knowledge, Berlin 1987, ISBN 3-06-012539-2 (area).
  • Siegmund Seybold (Ed.): Schmeil-Fitschen interactive . CD-ROM, version 1.1. Quelle & Meyer, Wiebelsheim 2002, ISBN 3-494-01327-6 .
  • Manfred A. Fischer, Wolfgang Adler, Karl Oswald: Excursion flora for Austria, Liechtenstein and South Tyrol . 2nd, improved and enlarged edition. State of Upper Austria, Biology Center of the Upper Austrian State Museums, Linz 2005, ISBN 3-85474-140-5 .

Individual evidence

  1. ↑ 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.  184 .
  2. ↑ a b c d e f g Rafaël Govaerts (Ed.): Carex atrata. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved October 17, 2016.
  3. ↑ Erhard Dörr, Wolfgang Lippert : Flora of the Allgäu and its surroundings. Volume 1, IHW, Eching 2001, ISBN 3-930167-50-6 , p. 258.

Web links

Commons : Weeping Sedge ( Carex atrata )  - Album containing pictures, videos and audio files