Austrian pond cress

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Austrian pond cress
Austrian pond cress (Rorippa austriaca)

Austrian pond cress ( Rorippa austriaca )

Systematics
Eurosiden II
Order : Cruciferous (Brassicales)
Family : Cruciferous vegetables (Brassicaceae)
Tribe : Cardamineae
Genre : Marsh cress ( Rorippa )
Type : Austrian pond cress
Scientific name
Rorippa austriaca
Crantz

The Austrian marsh cress ( Rorippa austriaca ) is a species of the genus marsh cress ( Rorippa ) within the cruciferous family (Brassicaceae).

description

Stems with leaves
inflorescence
fruit

The Austrian marsh cress grows as a deciduous, perennial, herbaceous plant and reaches heights of 40 to 100 cm. It has subterranean runners; the stem is branched at the top. The middle and upper stem leaves are undivided, irregularly serrated, elliptical, heart-shaped at the base, encompassing the stem with two tips and briefly hairy on the underside.

The flowering period extends from June to August. The four sepals are 1.5 to 2.5 mm long. The four yellow petals are 3 to 4 mm long. The on a 7 to 15 mm long Fruchtstiel standing Silicules is at a length of 1.5 to 3 mm, almost spherical.

The species has chromosome number 2n = 16.

ecology

In the Austrian marsh cress, a strong vegetative propagation through runners can be determined; therefore it has a soil consolidating effect on embankments and banks.

Occurrence

The Austrian marsh cress is an East European-West Asian plant species. Its distribution area includes Central, Eastern and Southeastern Europe, plus the Caucasus, Turkey and Kazakhstan. In Italy, France, Great Britain, Scandinavia, the Baltic States, Siberia, Japan and North America it is a neophyte. In Central Europe, its occurrence extends north to the Oder and Elbe regions, and it has been in the process of becoming naturalized in other areas in recent decades.

The Austrian Sumpfkresse preferred temporary wet, rich, light, sandy loam soil . In Central Europe it is a character species of the Agropyro (Elymo) -Rorippetum austriacae from the Agropyro-Rumicion association, but also occurs in societies of the Aegopodion or Arrhenatherion associations. It colonizes banks, also goes to paths and dams. They are rarely found on the Oder, Elbe, Rhine, Main, Neckar and Isar. In the area of ​​the Danube and in Austria it occurs scattered.

literature

  • Austrian pond cress. In: FloraWeb.de. (Section Description ( Rorippa austriaca ))
  • 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: The fern and flowering plants of Baden-Württemberg , Ulmer Verlag, Volume 2
  • Dietmar Aichele, Heinz-Werner Schwegler: The flowering plants of Central Europe , Franckh-Kosmos-Verlag, 2nd edition, volume 3

Individual evidence

  1. ↑ a b Erich Oberdorfer : Plant-sociological excursion flora for Germany and neighboring areas . 8th edition. Stuttgart, Verlag Eugen Ulmer, 2001. Page 469. ISBN 3-8001-3131-5
  2. ^ A b Rorippa in the Germplasm Resources Information Network (GRIN), USDA , ARS , National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland. Retrieved July 23, 2017.
  3. ↑ Jaakko Jalas, Juha Suominen: Atlas florae europaeae . Volume 10 Cruciferae (Sisymbrium to Aubrieta). Pages 132-133, Helsinki 1994. ISBN 951-9108-09-2

Web links

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