Common awn rice
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Common awn rice ( Piptatherum miliaceum ) |
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| Piptatherum miliaceum | ||||||||||||
| ( L. ) Coss. |
Common awn rice ( Piptatherum miliaceum (L.) Coss. , Syn .: Oloptum miliaceum (L.) Röser & Hamasha ) is a species of the genus Piptatherum and thus the family of sweet grasses (Poaceae).
description
The common awn rice is a perennial type of grass that is 60 to 150 centimeters high. He is mostly bald. The 5–8 nodes of the culms are often dark purple in color. The leaves are flat and usually 3–8 millimeters wide, they are rough on top and on the edges. The species has only a short hairy, membranous, 0.5–1.5 (-3) millimeter long border instead of the ligule. The flower panicle is 10–35 centimeters long and 6–15 centimeters wide, it is loosely spread and the side branches go from 3–6 or 20–30 inches from the main axis. 3–8– (50) thin lateral branches, the lower sometimes not bearing spikelets. The spikelets are single-flowered and 3–4 millimeters long. The lemma is glabrous, three-veined, 1.5–2 millimeters long and has a 3–5 millimeter long, slightly sloping, terminal awn.
The flowering period is April to October.
The chromosome number is 2n = 24.
distribution
Common awn rice occurs from the Mediterranean region to Iran and Macaronesia. The species is absent in Germany and Switzerland. It grows in rock corridors, on pastureland, on warm stony slopes, under overhanging rocks, on roadsides and on walls, also on cultivated land and in damp locations.
Taxonomy and systematics
The common awn rice was first described by Carl von Linné as Agrostis miliacea in Sp. Pl .: 61 (1753). The species was then named Piptatherum miliaceum (L.) Coss by Ernest Saint-Charles Cosson . in Notes Pl. Crit .: 129 (1812) placed in the genus Piptatherum . Most recently, Röser & Hamasha included it in Pl. Syst. Evol. 298: 365 (2012) placed in the genus Oloptum . Synonyms of the species are, for example: Oryzopsis miliacea (L.) Asch. & Schweinf. , Agrostis sepium L. , Milium arundinaceum Sm. And Urachne frutescens Link .
literature
- Hans Joachim Conert: Piptatherum . In: Gustav Hegi : Illustrated flora of Central Europe . 3rd ed., Volume I, Part 3, pp. 392-396. Verlag Paul Parey, Berlin, Hamburg 1987, ISBN 3-489-52320-2 (description, distribution)
Individual evidence
- ^ Piptatherum miliaceum at Tropicos.org. In: IPCN Chromosome Reports . Missouri Botanical Garden, St. Louis
- ↑ a b Rafaël Govaerts (Ed.): Oloptum miliaceum. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved June 22, 2020.
- ↑ Peter Schönfelder , Ingrid Schönfelder: The new cosmos Mediterranean flora. Franckh Kosmos Verlag Stuttgart 2008. ISBN 978-3-440-10742-3 . P. 408.