Rod Schöterich

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Rod Schöterich
Tailed Scotch (Erysimum hieraciifolium)

Tailed Scotch ( Erysimum hieraciifolium )

Systematics
Rosids
Eurosiden II
Order : Cruciferous (Brassicales)
Family : Cruciferous vegetables (Brassicaceae)
Genre : Scot oak ( Erysimum )
Type : Rod Schöterich
Scientific name
Erysimum hieraciifolium
L.

The Rod Schöterich ( Erysimum hieraciifolium , Syn .: Erysimum virgatum Roth ) - also Stiff Schöterich - is a species of the cruciferous family (Brassicaceae).

description

The Ruten-Schöterich is a biennial to perennial herbaceous plant that usually reaches heights of between 15 and 125 centimeters. On the sharp-edged stalk are elongated, lanceolate leaves that are notched along the entire edge or at a distance. The lower ones are serrated. The leaves are about five to six times as long as they are wide. The hair consists mainly of three-strand star hair. There are also few two, four or five-pointed hairs.

The hermaphrodite flowers are fourfold. The four green sepals are five to eight millimeters long and one to 1.5 mm wide. The four large, golden-yellow petals covered with star hair are usually seven to nine (six to ten) mm long and 2 to 3 mm wide. In the six fertile stamens , the yellow stamens are 4 to 6 mm long and the anthers 1.5 to 2 mm long. The flowering period of the rods schöterich extends mainly from June to August.

The fruit stalks stand upright on the stem with which they form an angle of about 30 degrees. The four-winged pods are usually 15 to 25 (10 to 55) mm long and 1 to 1.3 mm wide. The seeds have a size of 1 to 1.5 × 0.4 to 0.6 mm.

He has the chromosome number of 2n = 48.

  • Rod Schöterich

  • Blunt-edged stem

  • Stem leaves

  • The leaves are covered with a few two-rayed, predominantly three-rayed and also four- to seven-rayed star hairs.

  • pod

  • The pod is square, the edges are less hairy than the surfaces.

  • Petals

  • Petal outside with individual star hairs

Locations and distribution

The rod schöterich grows in river-accompanying weed communities, debris weed communities and steppe lawns. It prefers nutrient-rich, mostly calcareous stone and sandy soils. It thrives in the societies of the Aegopodion and Alliarion associations.

This species occurs throughout Europe and Asia. In Germany you can find the Rod Schöterich scattered around larger rivers such as the Rhine, Main and Sieg. In Austria and Switzerland this species occurs rather rarely in the colline to alpine area.

Possible confusion

The rod schotterich is quite rich in shape. In the past, a distinction was also made between subspecies, some of which were treated as a separate species (→  Erysimum virgatum ). There is also the possibility of confusion with the very similar-looking hard scotland ( Erysimum marschallianum ), whose pods stick out from the stem at an angle of no more than 10 °. Is very similar and the bleach Wallflower ( Erysimum crepidifolium ), whose leaves are occupied but mainly (compass needle shaped) with two-part hair.

literature

Individual evidence

  1. ↑ a b Erich Oberdorfer : Plant-sociological excursion flora for Germany and neighboring areas . With the collaboration of Angelika Schwabe and Theo Müller. 8th, heavily revised and expanded edition. Eugen Ulmer, Stuttgart (Hohenheim) 2001, ISBN 3-8001-3131-5 , pp.  472-473 .

Web links

Commons : Ruten-Schöterich ( Erysimum hieraciifolium )  - Album with pictures, videos and audio files