Dotted sedge

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Dotted sedge
Spotted Sedge (Carex punctata), illustration

Spotted Sedge ( Carex punctata ), illustration

Systematics
Monocots
Commelinids
Order : Sweet grass (Poales)
Family : Sourgrass family (Cyperaceae)
Genre : Sedges ( Carex )
Type : Dotted sedge
Scientific name
Carex punctata
Gaudin

The spotted sedge ( Carex punctata ) is a species of the genus Seggen ( Carex ) within the sour grass family (Cyperaceae). It is common in Europe and North Africa.

description

Habitus

The spotted sedge is a perennial herbaceous plant that reaches heights of 15 to 40 centimeters. It forms short runners and therefore grows in dense grass . The upright to ascending stems are smooth and bluntly triangular. The leaves are 5, rarely up to 8 millimeters wide, green to yellow-green in color, flat to slightly runny and rough on the edge. The bulbous leaf sheath wall has a dry-skinned appendage. The basal leaf sheaths are dark brown.

The stems are not enclosed by the bracts. The bracts have long sheaths and are about the same length as the inflorescence. The broadly ovate bracts are greenish, have a green central stripe and a whitish skin edge; they end in a spike tip and are shorter than the fruit. The spotted sedge is a multi-year sedge. There are one male and three female spikelets . The female spikelets are stalked, erect or nodding and a maximum of five times as long as they are wide. The stylus ends in three pits .

The shiny, pale green, bald fruit is 3 to 4 millimeters long, biconvex, puffed and has two veins. The beak is short and clearly two-toothed, smooth and bald on the edge.

The number of chromosomes is 2n = 68.

Occurrence

The spotted sedge is mainly found in the Mediterranean area and from Europe and North Africa to Turkey and also in Macaronesia. It is a meridional-montane to temperate, euoceanic floral element .

It occurs in Germany in the dune valleys of some of the East Frisian Islands (recently still scattered on Langeoog , and growing in small stocks. On Borkum , Juist , Wangerooge and Spiekeroog ) it is very rare. It is also found in Austria and Switzerland . Occasionally they can be found at the foot of the Alps , in the Valais and on the upper reaches of the Vorderrhein .

In Central Europe , it settles on spring horizons and outlet points for pressure water from slopes ; it only thrives in locations where the winters are relatively mild. Since it also tolerates drought quite well, it even colonizes the Garigue in the Mediterranean region . The spotted sedge thrives best on loose, well-ventilated soils that are moist and potash-free or very low in lime. It grows in societies of the associations Armerion maritimae, Violion caninae and Caricion davallianae.

Systematics

One can differentiate between the following varieties:

  • Carex punctata var. Laevicaulis (Hochst. Ex Seub.) Boott : It occurs on the Azores and Madeira.
  • Carex punctata var. Punctata : It occurs from Europe to Turkey and North Africa.

supporting documents

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 .

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.  190 .
  2. ↑ a b c d Rafaël Govaerts (Ed.): Carex punctata. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved October 24, 2016.
  3. ↑ Eckhard Garve: Atlas of the endangered fern and flowering plants in Lower Saxony and Bremen (=  nature protection and landscape maintenance in Lower Saxony . Volume 30 ). 1994, ISBN 3-922321-68-2 (No. 1).
  4. ↑ a b c 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. 303 .

Web links