Twisted feather grass

from Wikipedia, the free encyclopedia
Twisted feather grass
Illustration of the twisted feather grass (Stipellula capensis, right)

Illustration of the twisted feather grass ( Stipellula capensis , right)

Systematics
Commelinids
Order : Sweet grass (Poales)
Family : Sweet grasses (Poaceae)
Subfamily : Pooideae
Genre : Stipellula
Type : Twisted feather grass
Scientific name
Stipellula capensis
(Thunb.) Röser & Hamasha

The twisted feather grass ( Stipellula capensis , Syn .: Stipa capensis , Stipa tortilis ) is a species of the genus Stipellula and thus the family of sweet grasses (Poaceae).

description

inflorescence

Twisted feather grass is an annual or biennial grass that grows in dense clusters. The stalks reach heights of 10–70 centimeters, they are kneeling and ascending, smooth and bare and sometimes roughly rough under the panicle. The leaves are blue-green, rolled up, up to 15 centimeters long and 1-4 millimeters wide, the top leaf with a widened sheath that initially includes the inflorescence below. The ligule is a short border, it is ciliate like the mouth of the leaf sheath. The spikelets are two-flowered, without the awn they are 12-20 millimeters long; they stand in a 3–15 centimeter long, dense panicle that is twisted together when ripening. The lower glume is up to 16 millimeters long and slightly longer than the upper. The lemma is 5–9 millimeters long, hairy and carries a 6–12 centimeter long, double-kneeled awn. This awn is twisted and hairy up to the 2nd knee, but above it straight and rough. The palea is only a third as long as the lemma. The anthers are 2–3 millimeters long.

The flowering period is March to June.

The chromosome number is 2n = 36.

distribution

Twisted feather grass occurs from the Mediterranean region to India, in South Africa and in Macaronesia.

ecology

Twisted feather grass grows in grasslands, pastureland and in garigues.

Taxonomy

The twisted feather grass was developed by Carl Peter Thunberg in Prodr. Pl. Cap .: 19 (1794) first described under the name Stipa capensis . Röser & Hamasha placed the species in Schlechtendalia 24: 92 (2012) in the genus Stipellula Röser & Hamasha newly established by them . Synonyms for Stipellula capensis (Thunb.) Röser & Hamasha are Stipella capensis (Thunb.) Röser & Hamasha , Stipa retorta Cav. , Stipa tortilis Desf. and Stipa humilis bread.

literature

  • Hans Joachim Conert: Stipa capensis . In: Gustav Hegi : Illustrated flora of Central Europe . 3rd edition, Volume I, Part 3, page 400. Paul Parey Publishing House, Berlin, Hamburg, 1987. ISBN 3-489-52320-2 (description)
  • Peter Schönfelder , Ingrid Schönfelder: The new cosmos Mediterranean flora. Franckh Kosmos Verlag Stuttgart 2008. ISBN 978-3-440-10742-3 . P. 410.

Individual evidence

  1. ↑ Stipa capensis at Tropicos.org. In: IPCN Chromosome Reports . Missouri Botanical Garden, St. Louis
  2. ↑ a b Rafaël Govaerts (Ed.): Stipellula capensis. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved June 25, 2020.

Web links