Hairy love grass
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Hairy love grass ( Eragrostis pilosa ) |
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| ( L. ) P.Beauv. |
The hairy love grass ( Eragrostis pilosa ) is a species of the genus love grass ( Eragrostis ) and the sweet grass family (Poaceae).
description
The hairy love grass grows as a tufted, spreading, prostrate, kneeling, ascending or upright annual plant and reaches heights of 10 to 60 cm. The stalk has two to three nodes (nodes). The leaf blade is 3 to 15 cm long and 1 to 3 mm wide, its edge is without small bowl-shaped glands. The leaf sheaths are bare and only have a tuft of hair at their opening. The leaf margins are sparsely knotty short-glanded. Characteristic is the 1 to 2 mm long caterpillar on the leaf base. The ligule is formed as a ring of 0.3 to 1.5 mm long eyelash hairs.
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The panicle is 4 to 16 cm long and 2 to 10 cm wide; it is loose, spread out and contracted after flowering. The lower panicle branches arise in groups of three to six (rarely in pairs), they are thin, smooth and flexible and have 3 to 4 mm long protruding hairs at the base. The spikelets are 6- to 15-flowered, 4 to 8 mm long and 1 to 1.5 mm wide. The glumes are rather unequal; the lower glume is much shorter and narrower than the upper. The lemmas are 1.5 to 1.8 mm long. The three stamens have anthers 0.2 to 0.3 mm long.
The caryopsis is elliptical and 0.5 to 0.8 mm long.
The number of chromosomes is 2n = 40, less often 20.
Occurrence
The hairy love grass originally came from the Mediterranean and the southern parts of Asia, but is now common in warm, temperate and tropical areas around the world. In Europe, this type of southern Europe occurs north only to central Europe.
The hairy love grass thrives in footsteps on paths, on railway embankments, in pavement and in ruderal areas on sunny, dry, lime-poor sand and gravel soils. In the Alps it only rises to altitudes of 1180 meters. In Germany, the hairy love grass is naturalized in southwestern Baden-Württemberg, but is also introduced in North Rhine-Westphalia, Saxony, Lower Saxony, Brandenburg and Mecklenburg-Western Pomerania. It thrives in Central Europe in societies of the Polygonion avicularis associations; Sisymbrion or Eragrostion.
Systematics
The first valid publication of this species was in 1753 by Carl von Linné in Species Plantarum under the name Poa pilosa . The combination Eragrostis pilosa was validly published in 1812 by Ambroise Marie François Joseph Palisot de Beauvois .
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- Hans Joachim Conert: Eragrostis. In: Hans Joachim Conert (ed.): Illustrated flora of Central Europe . Founded by Gustav Hegi. 3rd, completely revised edition. Volume I. Part 3: Spermatophyta: Angiospermae: Monocotyledones 1 (2). Poaceae (real grasses or sweet grasses) . Parey Buchverlag, Berlin 1998, ISBN 3-8263-2868-X , p. 88–90 (published 1979–1998).
- 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 , p. 925 .
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 238.
- ↑ Monika Voggesberger: Eragrostis. In: Oskar Sebald, Siegmund Seybold, Georg Philippi, Arno Wörz (eds.): The fern and flowering plants of Baden-Württemberg . tape 7 : Special part (Spermatophyta, subclasses Alismatidae, Liliidae part 1, Commelinidae part 1): Butomaceae to Poaceae . Eugen Ulmer, Stuttgart (Hohenheim) 1998, ISBN 3-8001-3316-4 , pp. 239-252 .
- ↑ Carl von Linné: Species Plantarum. Volume 1, Impensis Laurentii Salvii, Holmiae 1753, p. 68, digitized
- ↑ Ambroise-Marie-François-Joseph Palisot de Beauvois: Essai d'une nouvelle agrostographie. Paris 1812, p. 162 and 71, 175, digitized .
Web links
- Hairy love grass. In: FloraWeb.de.
- Hairy love grass . 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 .
- Eragrostis pilosa (L.) P. Beauv. In: Info Flora , the national data and information center for Swiss flora . Retrieved September 26, 2015.
- Thomas Meyer: Data sheet with identification key and photos at Flora-de: Flora von Deutschland (old name of the website: Flowers in Swabia )