Low sedge

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Low sedge
Steppe sedge (Carex supina)

Steppe sedge ( Carex supina )

Systematics
Monocots
Commelinids
Order : Sweet grass (Poales)
Family : Sourgrass family (Cyperaceae)
Genre : Sedges ( Carex )
Type : Low sedge
Scientific name
Carex supina
Willd. ex electoral b.

The low sedge or steppe sedge ( Carex supina ) is a species of the genus Sedges ( Carex ). It is widespread in the northern hemisphere in the temperate areas of Eurasia and North America .

description

Vegetative characteristics

The low sedge is a perennial herbaceous plant and reaches heights of growth of 8 to 20 centimeters. It forms longer runners . The stiff upright stems are blunt-edged and rough in the upper area. The upright leaves are bare, flat grass-green, up to 1.5 millimeters wide, curled at the edge and always shorter than the stem. The lower leaf sheaths are purple and reticulate.

Generative characteristics

Fruit cluster

The flowering period extends from April to May. It is a variegated sedge. The terminal spikelet is male, sometimes there are a few female flowers at the base. The terminal spikelet is up to 13 millimeters long and about 2 millimeters wide and grows sessile or has a short stalk. There are one to three female spikelets, which are placed close to each other, and each contain three to five (rarely one to ten) flowers. They are spherical, up to 8 millimeters long and about 5 millimeters wide. The bracts have no sheath and are dry-skinned at the base. The red-brown, skin-margined bract is pointed and shorter than the fruit. The stylus ends in three pits .

The shiny yellow to chestnut brown fruit is 2.5 to 3 millimeters long, spherical, puffed, glabrous and abruptly narrowed into the short, smooth beak.

The number of chromosomes is 2n = 38 or 44.

Occurrence

The lower sedge is common in the northern hemisphere in the temperate areas of Eurasia and from subarctic North America to the United States. It is a meridional-montane to temperate, continental floral element . In Central Europe it occurs only sporadically in Germany , the Czech Republic , Slovakia , Lower Austria and South Tyrol . In Germany it is seldom to absent-minded in the Rhine-Main area as well as in Mecklenburg and in some federal states also extinct. It was rated endangered in 1996 in the Red List of Endangered Plant Species in Germany. Their Central European occurrences are remnants of a formerly larger area from interglacial warm periods.

The low sedge grows in dry continental grasslands , dry bushes, in dry oak and pine forests. It occurs from the collinen to the submontane elevation . It avoids lime and needs warmth. The low sedge thrives best on very loose and therefore often sandy or stony, often quite shallow soils, which nevertheless must not be missing fine soil. It is a characteristic species of Stipetum capillatae from the Association Festucion valesiacae.

Systematics

Carex supina was first published in 1803 by Carl Ludwig Willdenow in Göran Wahlenberg : Kongl. Vetenskaps Academiens Nya Handlingar , 24, 2, pp. 158–159. The specific epithet supina means curved backwards. Synonyms for Carex supina Willd. ex electoral b. are: Edritria supina (Willd. ex Wahlenb.) Raf. , Carex obtusata var. Supina (Willd. Ex Wahlenb.) Garcke , Carex nitida var. Supina (Willd. Ex Wahlenb.) Fiori .

Of Carex supina there are two varieties:

  • Carex supina var. Spaniocarpa (Steud.) B. Boivin ( Syn .: Carex spaniocarpa Steud. , Carex supina subsp. Spaniocarpa (Steud.) Hultén ): It is from Siberia to Korea and from subarctic North America to the northern and central United States States spread.
  • Carex supina Willd. ex electoral b. var. supina (Syn .: Carex verna Schkuhr nom. illeg., Carex conglobata Kit. ex Willd. nom. illeg., Carex oligocarpa Hornem. ex Boott nom. illeg., Carex sphaerocarpa Willd. nom. illeg., Carex aprica Turcz . ex Besser , Carex campestris Host , Carex costata J.Presl & C.Presl , Carex turczaninofii Steud. ex Boott , Carex nitida var. conglobata Nyman , Carex obtusata var. spicata Asch. , Carex obesa var. minor Boeckeler , Carex obesa subsp . conglobata (Nyman) K. Richt. , Carex supina subsp. eurasiatica V.I.Krecz. ): It is widespread from Europe through western Asia to western Nepal .

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 Carex supina Wahlenb., Low Sedge. In: FloraWeb.de.
  2. ↑ a b c d e f Rafaël Govaerts (Ed.): Carex supina. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved October 23, 2016.
  3. ↑ 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.  185 .
  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 .

Web links

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