Volga rocket

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Volga rocket
Volga rocket (Sisymbrium volgense)

Volga rocket ( Sisymbrium volgense )

Systematics
Eurosiden II
Order : Cruciferous (Brassicales)
Family : Cruciferous vegetables (Brassicaceae)
Tribe : Sisymbrieae
Genre : Rocket ( sisymbrium )
Type : Volga rocket
Scientific name
Sisymbrium volgense
M.Bieb. ex E. Fourn

The Volga Rocket ( Sisymbrium volgense ) is a plant of the genus rauks ( Sisymbrium ) within the family of Brassicaceae (Brassicaceae).

description

Section of an inflorescence

The Volga rocket is a blue-green, upright, deciduous, usually perennial, herbaceous plant that reaches heights of 30 to 80 centimeters. It forms a creeping rhizome . The alternate leaves are almost bare, only the lower ones are somewhat hairy. The larger stem leaves are triangular-ovate and lyre-shaped, pinnately fissured, with serrated sections.

The flowering period extends from May to August. The almost panicle-like total inflorescence is composed of short, racemose partial inflorescences. The hermaphrodite flowers are fourfold. Of the four 3.5 to 5 millimeter long sepals , the two outer ones below the tip are horned. The four free, yellow petals are 7 to 9 millimeters long.

The upright, slightly curved, less than 1 millimeter thick fruit stalks are 5 to 8 millimeters long. The pods are 25 to 50 millimeters long and 1 millimeter wide.

The number of chromosomes is 2n = 14.

ecology

Volga rocket is a hemicryptophyte . The Volga rocket is a light-loving pioneer plant .

Occurrence

The Volga rocket occurs naturally in the steppe areas of southeastern Russia . It is occasionally a neophyte in Western, Northern and Central Europe and in North America, and in some cases it is also naturalized. It thrives in Central Europe on dry, warm summer ruderal sites , preferably together with the gray cress ( Berteroa incana ) in the Berteroetum from the Dauco-Melilotion association or together with the mouse barley ( Hordeum murinum ) in the Hordeetum from the Sisymbrion association.

Taxonomy

Even Friedrich August Marschall von Bieberstein (1768-1826) used the name volgense Sisymbrium . The valid first description of Sisymbrium volgense was not made until 1865 by Eugene Pierre Nicolas Fournier in Recherches Anatomiques et Taxonomique sur la Famille des Cruciferes et sur lè Genre Sisymbrium en Particular. Paris , p. 97.

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Individual evidence

  1. ↑ a b c d e f g h i Volga rocket. 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 475.
  3. ↑ a b Sisymbrium volgense in the Germplasm Resources Information Network (GRIN), USDA , ARS , National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland. Retrieved September 11, 2014.
  4. ^ First description scanned at Hathi Trust Digital Library .
  5. ^ Volga rocket at Tropicos.org. Missouri Botanical Garden, St. Louis, accessed September 11, 2014.

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. Eugen Ulmer, Stuttgart 1990, ISBN 3-8001-3312-1 .

Web links

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