Little love grass
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Lesser love grass ( Eragrostis minor ) |
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| Eragrostis minor | ||||||||||||
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The small love grass ( Eragrostis minor ) is a species of the genus love grass ( Eragrostis ) within the sweet grass family (Poaceae). This small grass is neophytic in Central Europe in heat- loving, ruderal step plant communities , especially in cities.
description
Vegetative characteristics
The little love grass grows as a tufted spread to upright, annual herbaceous plant and reaches heights of 5 (to 30) cm. The stalk has three to four nodes, a length of (5 to) 15 to 50 (to 80) cm and a diameter of 1 to 2 mm. The leaf blade is 3 to 12 cm long and 1 to 5 mm wide. The leaf sheaths are hairy. The leaf margins are sparsely knotty short-glanded. Characteristic is the 1 to 2 mm long caterpillar on the leaf base. The ligules (ligules) are formed as a hairline.
Generative characteristics
This bluegrass forms a 4 cm long to 20, rispigen inflorescence with densely spread, spirally arranged branches. The lower branches stick out rigidly. They are hairy at the base or at most 1 mm long. The 8- to 20-flowered spikelets are 5 to 8 mm long, oblong-linear and strongly flattened. The two or three stamens have anthers 0.2 to 0.3 mm long.
The elongated caryopsis is 0.7 to 0.8 mm long and dark brown.
The number of chromosomes is 2n = 40.
Occurrence
The little love grass was originally Mediterranean and widespread in Asia and is a neophyte almost worldwide .
It was introduced into Germany at the end of the 18th century. The first locations at train stations suggest a spread with rail traffic. From there, the little love grass spread quickly and is now naturalized as a neophyte .
It thrives on railway gravel, on paths, in pavement, in fields, gardens and vineyards on sunny, dry, moderately acidic, sandy to gravelly soils in warm locations. From a plant sociological point of view, it is widespread in step societies . It is a character species of the Digitario-Eragrostietum from the Eragrostion association. It also settles in plant communities of the annual ruderal and arable weed corridors , order Sisymbrietalia or Association Polygonion avicularis.
Systematics
The first publication of this species took place in 1753 by Carl von Linné in Species Plantarum under the Basionym Poa eragrostis L. The nomen novum Eragrostis minor replacing this name was published in 1809 by Nikolaus Thomas Host . Further synonyms for Eragrostis minor Host are: Eragrostis poaeoides P.Beauv. ex Roem. & Schult. and Eragrostis suaveolens A.K.Becker ex Claus .
swell
- Shou-liang Chen, Paul M. Peterson: Eragrostis. In: Wu Zheng-yi, Peter H. Raven, Deyuan Hong (Eds.): Flora of China . Volume 22: Poaceae . Science Press / Missouri Botanical Garden Press, Beijing / St. Louis 2006, ISBN 1-930723-50-4 , Eragrostis minor , p. 477 (English, online ).
- Entry on Pacific Island Ecosystems at Risk = PIER.
- WD Clayton, KT Harman, H. Williamson: Entry on GrassBase - The Online World Grass Flora , 2008.
Individual evidence
- ↑ a b Eragrostis minor host, Kleines Liebesgras. In: FloraWeb.de.
- ↑ a b c 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.
- ^ 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 .
- ↑ Carl von Linné: Species Plantarum. Volume 1, Lars Salvius, Stockholm 1753, p. 68 ( digitized version ).
- ↑ Nikolaus Thomas Host: Icones et Descriptiones Graminum Austriacorum. Volume 4, Matthias Andreas Schmidt, Vienna 1809, p. 15 ( digitized version ).
- ↑ Eragrostis minor in the Germplasm Resources Information Network (GRIN), USDA , ARS , National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland. Retrieved December 4, 2015.
Web links
- Little 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 .
- Distribution map for Germany. In: Floraweb .
- Eragrostis minor Host 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 )