Rod double seed

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Rod double seed
Rod double seed (Diplotaxis viminea), illustration

Rod double seed ( Diplotaxis viminea ), illustration

Systematics
Eurosiden II
Order : Cruciferous (Brassicales)
Family : Cruciferous vegetables (Brassicaceae)
Tribe : Brassiceae
Genre : Double seeds ( diplotaxis )
Type : Rod double seed
Scientific name
Diplotaxis viminea
( L. ) DC.

The rod double seed ( Diplotaxis viminea ) is a species of the genus double seed ( Diplotaxis ) within the cruciferous family (Brassicaceae).

description

The rod double seed is an annual herbaceous plant that reaches heights of 5 to 30 centimeters. It forms a thin tap root . Per specimen there are usually several stems with flowers that are glabrous or slightly hairy and only leafy at the base. The leaves are usually lyre-shaped and pinnately lobed to pinnate.

The flowering period extends from June to September. The hermaphrodite flowers are fourfold. The four sepals are 2 to 2.5 millimeters long. The four free, pale yellow petals are 3 to 4 millimeters long and slightly longer than the calyx and gradually narrow into the nail .

The 3 to 20 millimeter long fruit stalks are quite steep. The seeds stand in two rows in the 10 to 35 millimeter long pods .

The number of chromosomes is 2n = 20.

ecology

The rod double seed is a therophyte .

Occurrence

The rod double seed is a Mediterranean floral element and occurs in many countries in southern Europe , North Africa, western Asia and the Crimea . In Romania he is a neophyte. In Europe , its main distribution area is in the Mediterranean . In Central Europe it occurs sporadically and inconsistently on the Upper Rhine and Lake Geneva .

The rod double seed thrives best on nutrient-rich loam or clay soils . In Central Europe, the Ruten-Doppelsame inhabits areas with a warm climate in vineyards , gardens and wasteland . It likes to thrive together with the annuals of the ringwort ( Mercurialis annua ) in societies of the Fumario-Euphorbion association, for example in the Geranio-Allietum and in the Mediterranean area in societies of the Diplotaxidion association.

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Individual evidence

  1. ↑ a b c d e f g Rod double seed. In: FloraWeb.de.
  2. ↑ 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 440.
  3. ↑ a b Diplotaxis in the Germplasm Resources Information Network (GRIN), USDA , ARS , National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland. Retrieved July 17, 2017.

literature

  • Otto Schmeil , Jost Fitschen (greeting), Siegmund Seybold: The flora of Germany and the neighboring countries. A book for identifying all wild and frequently cultivated vascular plants. 95th completely revised u. exp. Edition. Quelle & Meyer, Wiebelsheim 2011, ISBN 978-3-494-01498-2 .
  • Henning Haeupler , Thomas Muer: picture atlas of the fern and flowering plants of Germany (= the fern and flowering plants of Germany. Volume 2). 2nd, corrected and enlarged edition. Published by the Federal Agency for Nature Conservation. Ulmer, Stuttgart 2007, ISBN 978-3-8001-4990-2 .
  • Oskar Sebald, Siegmund Seybold, Georg Philippi (Hrsg.): The fern and flowering plants of Baden-Württemberg. Volume 2: Special part (Spermatophyta, subclass Dilleniidae): Hypericaceae to Primulaceae. 2nd expanded edition. Eugen Ulmer, Stuttgart 1993, ISBN 3-8001-3323-7
  • Dietmar Aichele, Heinz-Werner Schwegler: The flowering plants of Central Europe. Volume 3: Evening primrose plants to reddish plants . Franckh-Kosmos, Stuttgart 1995, ISBN 3-440-06193-0 .

Web links

Commons : Rods-Doppelsame ( Diplotaxis viminea )  - Collection of images, videos and audio files