Sesleria

Lime Blue Grass ( Sesleria albicans)

The blue grasses ( Sesleria ) are a genus of flowering plants in the family of grasses ( Poaceae ). The genus is named after the Italian physician and botanist Leonardo Sesler († 1785), named.

Features

The blue grasses are perennial, clump - forming grasses or grass. They form numerous non- flowering shoots, which grow tall within the lowest leaf sheaths (intravaginal ). The stalks stand upright and unbranched. The leaf sheaths are closed to above, the lowest often remain for long. The ligule is a membranous fringe of up to 1 mm in length, which is ciliated at the top. The leaf blades are spread out or folded, and stiff.

The inflorescence is a roundish - ovate to walzliche Ährenrispe. She is tightly contracted, of slate gray, bluish or whitish color. The side branches on the ground do not have to two large, roundish - ovate or scale-like bracts. The spikelets contain two to five petals and are laterally compressed. All flowers are hermaphroditic and fall to maturity individually from the glumes. These are almost identical, have one, rarely up to three nerves are shorter than the spikelet, usually grannenspitzig, keeled and thin-skinned. The lemmas are five ( rarely up to seven ) annoying to have one, three or five grannige tips, keeled, membranous and wear on edge and nervous hair. The palea are thin-skinned and about the same length as the lemmas. The ovary is oberseits mostly short haired. He carries two pens that are grown in the lower area. The scars are thready and emerge at the top of the florets.

The caryopses are ellipsoidal and hairy at the top. The embryo is a quarter to a third of the length of the fruit. The navel is round and equal in length to the embryo.

Dissemination

Most species are restricted to Europe, one also comes in Africa and five in Asia.

System

The genus is placed in the subfamily Pooideae and the tribe Poeae within the grasses. You genus includes about 27 species. This applies to the case that the sometimes -conceived as independent genera Sesleriella and Psilathera are included.

The nomenclature is not uniform in different floras. The same name is used partially for different species. The Central European species are:

  • Lime Blue Grass ( Sesleria albicans Kit ex Schult, or Sesleria caerulea (L.) Ard.s.str. .. ); Area of ​​distribution: Western and Central Europe, including Iceland, Poland, Czech Republic, Slovakia, Hungary, Slovenia, Northern Italy, France and Spain
  • Bog bluegrass ( Sesleria caerulea, or Sesleria uliginosa ); Coverage: Sweden, Finland, Poland, Czech Republic, Austria, Northern Italy, Hungary, Montenegro, Romania, Bulgaria and western Russia; missing in Germany
  • Dwarf Blue Grass Blue Grass or egg-shaped ( Sesleria ovata ( Hoppe) A. Core. ); Home: Alps of Italy, France, Germany, Austria, Slovenia
  • Hungarian Blue Grass or Pannonia bluegrass or Pannonisches Blue Grass ( Sesleria sadleriana Janka ); Home: Austria, Slovenia, Hungary, Poland
  • Ball head bluegrass ( Sesleria sphaerocephala Ard. ); Home: south-eastern Alps of Switzerland, Austria, Italy and Slovenia

In addition, the GrassBase of Kew Gardens lists the following ways:

  • Sesleria alba Sm
  • Sesleria araratica Kit Tan
  • Siber bluegrass ( Sesleria argentea ( Savi ) Savi ); Home: Spain, France, Italy
  • Autumn Blue Grass ( Sesleria autumnalis ( Scop. ) FW Schultz ); Home: Italy, Slovenia, Croatia, Bosnia, Montenegro, Albania
  • Sesleria bielzii Schur
  • Sesleria coerulans Friv.
  • Sesleria comosa Velen.
  • Sesleria doerfleri Hayek
  • Green grass head ( Sesleria heufleriana Schur ); Home: Slovakia, Hungary, Romania, Western Russia
  • Sesleria insularis divan; Home: Italy, Balkan peninsula, Sardinia, Corsica, Balearic Islands
  • Sesleria juncifolia Suffren ( Syn: Sesleria tenuifolia Schrad. ); Home: Northeast Italy, Slovenia, Croatia
  • Sesleria korabensis ( Kumm. & Jav. ) Deyl
  • Sesleria latifolia ( Adamović ) Degen
  • Sesleria leucocephala DC.
  • Sesleria nitida Ten.; Home: Mountains of Italy and Sicily
  • Sesleria phleoides Steven ex Roem. & Schult.
  • Sesleria rigida Heuff. ex Rchb. ; Home: the mountains of the Balkan Peninsula, Romania
  • Sesleria robusta Schott, Nyman & Kotschy
  • Sesleria Taygetea Hayek
  • Sesleria tenerrima ( Fritsch ) Hayek
  • Sesleria vaginalis Boiss. & Orph.
  • Sesleria wettsteinii Dörfl. & Hayek

Documents

  • Siegmund Seybold (ed.): Schmeil Fitschen - interactive ( CD -Rom ), Quelle & Meyer, Wiebelsheim 2001/2002, ISBN 3-494-01327-6
  • Walter Erhardt et al: The big walleye. Encyclopedia of plant names. Volume 2 Eugen Ulmer Verlag, Stuttgart, 2008. ISBN 978-3-8001-5406-7
  • Hans Joachim Conert: Sesleria. Hans Joachim Conert (ed.): Illustrated Flora of Central Europe. Founded by Gustav Hegi. Third, completely revised edition. Volume I. Part 3: Spermatophyta: Angiospermae: Monocotyledones 1 (2). Poaceae (true grasses or grasses ), Parey Verlag, Berlin 1979-1998, ISBN 3-8263-2868- X, pp. 473-486 (1992 and 1994).
Giovanni Antonio Scopoli Perennial plant Husk Ovary (botany) Stigma (botany) Caryopsis Cereal germ Royal Botanic Gardens (Kew)
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