Early oatmeal
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Early Haferschmiele ( Aira praecox ) |
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| Aira praecox | ||||||||||||
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The early Haferschmiele ( Aira praecox ) is a species of the sweet grass family (Poaceae).
description
The early Haferschmiele is annual, grows clumpy and is up to 15 cm high. The bare leaves are bristly rolled up. The ligule is fringed and 1 to 3 mm long. The panicle is contracted like a spike and consists of 2 to 3 mm long, two-flowered spikelets . The dorsal awn of the lemma is 3 to 4 mm long.
The plant blooms in May and June.
The number of chromosomes is 2n = 14.
Location requirements
The early Haferschmiele colonized mainly semi-arid and dry grasslands as well as ruderal sites and fallow land on acidic sites. It thrives on dry, nutrient-poor and base-poor, acidic, humus and fine earth poor, sandy or gravel soils. It is a character species of the Airetum praecocis from the Thero-Airion association.
The natural occurrence of the species is limited to the area of Europe to northwestern Turkey and Macaronesia. In many other countries, such as North America and New Zealand, it is a neophyte.
literature
- Eckehart J. Jäger, Klaus Werner (Ed.): Excursion flora from Germany . Founded by Werner Rothmaler. 10th edited edition. tape 4 : Vascular Plants: Critical Volume . Elsevier, Spektrum Akademischer Verlag, Munich / Heidelberg 2005, ISBN 3-8274-1496-2 .
Individual evidence
- ↑ a b Erich Oberdorfer : Plant-sociological excursion flora for Germany and neighboring areas . 8th edition. Verlag Eugen Ulmer, Stuttgart 2001, ISBN 3-8001-3131-5 . Page 241.
- ↑ Rafaël Govaerts (ed.): Aira praecox. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved November 1, 2016.
Web links
- Early oatmeal. In: FloraWeb.de.
- Early oatmeal . In: BiolFlor, the database of biological-ecological characteristics of the flora of Germany.
- Profile and distribution map for Bavaria . In: Botanical Information Hub of Bavaria .
- Distribution in the northern hemisphere from: Eric Hultén, Magnus Fries: Atlas of North European vascular plants , 1986, ISBN 3-87429-263-0
- Thomas Meyer: Data sheet with identification key and photos at Flora-de: Flora von Deutschland (old name of the website: Flowers in Swabia )
- Carl von Linné: Species Plantarum 1, 1753, p. 65 (first description)
