Branchy twinks

Branchy twinks
	Branched Zwenke ( Brachypodium retusum )
Systematics
Order :	Sweet grass (Poales)
Family :	Sweet grasses (Poaceae)
Subfamily :	Pooideae
Tribe :	Brachypodieae
Genre :	Zwenken ( Brachypodium )
Type :	Branchy twinks
Scientific name
	Brachypodium retusum
	( Pers. ) P.Beauv.

The branchy Zwenke ( Brachypodium retusum ) is a species of the genus Zwenken ( Brachypodium ) within the sweet grass family (Poaceae).

description

The branchy Zwenke is a perennial grass that grows 20–60 centimeters high and which develops numerous subterranean runners. The shoots often last more than one growing season. The stalks are 10-65 centimeters high. The gray-green stem leaves are arranged in two rows. The ligule is 1 millimeter long, blunt and ciliate. The leaf blade is pointed at the front end and not sickle-shaped. The stalk leaves are 2.3–6.5 (–11) centimeters long and 1.5–3 millimeters wide and later usually rolled up. The flower cluster bears 1–4 (–7) spikelets with very short stalk. One spikelet has 10–18 flowers. The upper glume is pointed or covered with a short awn. The awn of the lemma the upper flowers is from 0.7 to 3.4 millimeters long.

The flowering period is April to July.

distribution

Brachypodium retusum occurs from the Mediterranean area to the Caucasus and from Ethiopia to the Arabian Peninsula. The species grows in light forests, in the garigue, in the maquis and in cultivated land.

Taxonomy

The branchy Zwenke was first described by Christian Hendrik Persoon as Bromus retusus in Syn. Pl. 1: 96 (1805). Ambroise Marie François Joseph Palisot de Beauvois has them in Ess. Agrostogr .: 101, 155 (1812) placed in the genus Brachypodium . Synonyms for Brachypodium retusum (Pers.) P.Beauv. are: Bromus plukenetii All. , Brachypodium ramosum Roem. & Schult. , Festuca caespitosa Desf. , Brachypodium plukenetii (All.) C. Presl and Triticum caespitosum (Desf.) DC.

Individual evidence

↑ ^a ^b ^c Peter Schönfelder , Ingrid Schönfelder: The new cosmos Mediterranean flora. Franckh Kosmos Verlag, Stuttgart 2008, ISBN 978-3-440-10742-3 , p. 402.
↑ U.Schippmann: Revision of the European species of the genus Brachypodium. In: Boissiera 45, 1-249, 1991.
↑ ^a ^b Rafaël Govaerts (Ed.): Brachypodium retusum. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved June 20, 2020.

[Schönfelder2008-1] Peter Schönfelder , Ingrid Schönfelder: The new cosmos Mediterranean flora. Franckh Kosmos Verlag, Stuttgart 2008, ISBN 978-3-440-10742-3 , p. 402.

[Schippmann1991-2] U.Schippmann: Revision of the European species of the genus Brachypodium. In: Boissiera 45, 1-249, 1991.

[WCSP-3] Rafaël Govaerts (Ed.): Brachypodium retusum. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved June 20, 2020.