Rye sedge

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Rye sedge
Systematics
Monocots
Commelinids
Order : Sweet grass (Poales)
Family : Sourgrass family (Cyperaceae)
Genre : Sedges ( Carex )
Type : Rye sedge
Scientific name
Carex secalina
Election b.

The rye sedge ( Carex secalina ) is a species of the genus Seggen ( Carex ) within the sourgrass family (Cyperaceae). It is common in Europe and Western Asia.

description

The rye sedge is a perennial herbaceous plant and reaches heights of 10 to 30 centimeters. It grows fast. The stems are triangular, slender and rise up arching. The leaves are 2 to 3 millimeters wide, gray-green and rough on the edge. They are a little longer than the stem.

The rye sedge belongs to the variety of sedges. The sometimes branched inflorescence contains two to three female spikelets on the side axes and usually there are one to three male spikelets and two to five female. The distant female spikelets are petiolate, with a length of up to 3 centimeters and a diameter of 6 to 7 millimeters, slim-cylindrical and loose-flowered. The bracts have a long sheath and barely protrude beyond the stem. The bracts are oblong-egg-shaped and pale-skinned with a yellow-brown central stripe. They are pointed and shorter than the fruit. The stylus has three scars . Flowering time is May and June.

The pale yellow, glabrous, dull fruit is up to 7 millimeters long and rough on the edge. The fruits are not in rows.

Occurrence

The rye sedge occurs from Central Europe to Central Asia. It is a meridional-montane to subtemperate continental floral element . It reaches the western limit of its distribution area near Erfurt and Eisleben , in the Czech Republic (in the Elbe Valley) and in Lower Austria , the focus of which is between the Black Sea and the Caspian Sea . It occurs only sporadically in Central Europe . It is very rare in Germany .

The rye sedge thrives best on salty , loamy soils . It is a pointer plant for compacted salt soils . It occurs in warm and dry areas in summer. It grows in damp meadows and on steps in damp salt marshes.

Systematics

One can differentiate between the following varieties:

  • Carex secalina var. Alpina Kük. & Bornm. : It occurs in Iran.
  • Carex secalina var. Secalina : It occurs from Central Europe to Central Asia.

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 , pp. 556-557 (area).
  • Siegmund Seybold (Ed.): Schmeil-Fitschen interactive . CD-ROM, version 1.1. Quelle & Meyer, Wiebelsheim 2002, ISBN 3-494-01327-6 .

further reading

  • Pavol Eliáš jun., Vít Grulich, Daniel Dítě, Dušan Senko: Distribution and ecology of Carex secalina in the Czech Republic and Slovakia. In: Acta Societatis Botanicorum Poloniae. Volume 81, No. 2, 2012, pp. 87-92, doi: 10.5586 / asbp.2012.011 .
  • Marlena Lembicz, Agnieszka Bogdanowicz, Julian Chmiel, Waldemar Żukowski: Carex secalina (Cyperaceae), a critically endangered species of Europe: historic and new localities in Poland. In: Acta Societatis Botanicorum Poloniae. Volume 78, No. 4, 2009, pp. 311-320, doi: 10.5586 / asbp.2009.041 .
  • David A. Werier, Robert FC Naczi: Carex secalina (Cyperaceae), an Introduced Sedge New to North America. In: Rhodora. Volume 114, No. 960, 2012, pp. 349-365, doi: 10.3119 / 12-06 .
  • Waldemar Żukowski, Marlena Lembicz, Paweł Olejniczak, Agnieszka Bogdanowicz, Julian Chmiel: Carex secalina (Cyperaceae), a species critically endangered in Europe: from propagule germination to propagule production. In: Acta Societatis Botanicorum Poloniae. Volume 74, No. 2, 2005, pp. 141-147, doi: 10.5586 / asbp.2005.019 .

Individual evidence

  1. ↑ a b c d Rafaël Govaerts (Ed.): Carex secalina. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved October 24, 2016.
  2. ↑ 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. 300 .

Web links