Deaf oats

Deaf oats
	Avena sterilis in stock
Systematics
	Commelinids
Order :	Sweet grass (Poales)
Family :	Sweet grasses (Poaceae)
Subfamily :	Pooideae
Genre :	Oats ( Avena )
Type :	Deaf oats
Scientific name
	Avena sterilis
	L.

Fruiting spikelet

The pigeon oat ( Avena sterilis ) is a species of the sweet grass family (Poaceae).

features

The pigeon oat is an annual plant that reaches heights of 20 to 80, rarely up to 160 cm.

The panicle is one-sided. The spikelets are 25 to 50 mm long. The lemmas are hairy 4 to 8 mm long. They have two membranous, 1 to 2 mm long teeth at the top. At maturity, the spikelet axis only disintegrates above the glume , so that the mostly two fruits of a spikelet fall out together.

The flowering period in Central Europe extends from June to August. The germination takes place in autumn and winter.

The number of chromosomes is 2n = 42.

Distribution and locations

The pigeon oat is native to Macaronesia and from the Mediterranean to the western Himalayas and Kenya. It is naturalized in Western Europe and is a dreaded weed here. In Central Europe it is rare and inconsistent, where it usually cannot winter successfully.

Systematics

The pigeon oat is one of the parent species of the polyploid species of seed oats ( Avena sativa ) and flying oats ( Avena fatua ).

In addition to the nominate form, three subspecies and a nothotaxon are distinguished within the species:

Avena sterilis subsp. atheranthera (C. Presl) H. Scholz : It is used by some authors as a synonym for Avena barbata Pott ex Link .
Ludwig's Tauber oats ( Avena sterilis subsp. Ludoviciana (Durieu) Gillet & Magne ) are sometimes listed as a separate species. It occurs in the Canary Islands and from the Mediterranean region to Central Asia and the western Himalayas.
Avena sterilis nothosubsp. malzevii H. Scholz (= Avena fatua × Avena sterilis subsp. ludoviciana ):
Actual deaf oats ( Avena sterilis L. subsp. Sterilis ): It occurs from the Mediterranean region to Pakistan and Kenya.
Avena sterilis subsp. trichophylla (K. Koch) Malzev : It is used by some authors as a synonym for Avena sterilis subsp. ludoviciana posed.

supporting documents

Manfred A. Fischer, Karl Oswald, Wolfgang Adler: Excursion flora for Austria, Liechtenstein and South Tyrol . 3rd, improved edition. State of Upper Austria, Biology Center of the Upper Austrian State Museums, Linz 2008, ISBN 978-3-85474-187-9 .

Individual evidence

^ Tropicos. [1]
↑ ^a ^b ^c ^d ^e Rafaël Govaerts (Ed.): Avena sterilis. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved May 25, 2020.
↑ Benito Valdés, Hildemar Scholz; Eckhard von Raab-Straube, Gerald Parolly (collaborators): Poaceae (pro parte majore). Avena sterilis. In: Euro + Med Plantbase - the information resource for Euro-Mediterranean plant diversity. Berlin 2009.
↑ Hildemar Scholz: Message about a hybrid weed oat from the southern Alps of Upper Italy. In: Reports of the Bavarian Botanical Society. Volume 66/67, 1996, pp. 229-231.

Web links

Commons : Tauber Hafer - Collection of images, videos and audio files

Deaf oats. In: FloraWeb.de.
Deaf oats . In: BiolFlor, the database of biological-ecological characteristics of the flora of Germany.

[Tropicos-1] Tropicos. [1]

[WCSP-2] Rafaël Govaerts (Ed.): Avena sterilis. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved May 25, 2020.

[Euro+Med-3] Benito Valdés, Hildemar Scholz; Eckhard von Raab-Straube, Gerald Parolly (collaborators): Poaceae (pro parte majore). Avena sterilis. In: Euro + Med Plantbase - the information resource for Euro-Mediterranean plant diversity. Berlin 2009.

[Scholz1996-4] Hildemar Scholz: Message about a hybrid weed oat from the southern Alps of Upper Italy. In: Reports of the Bavarian Botanical Society. Volume 66/67, 1996, pp. 229-231.