Sisymbrium sophia

Ordinary Besenrauke ( Descurainia sophia )

The Ordinary Besenrauke ( Descurainia sophia ), also called Sophienrauke, is a species of the genus Besenrauken in the family of cruciferous plants ( Brassicaceae). The genus is represented in Germany and Austria only one with this kind; worldwide are about 40 species known. The scientific genus name honors the French pharmacist and botanist François Descurain ( 1658-1749 ).

Description

This species is an annual, herbaceous plant that reaches heights of growth between 25 and 100 cm in the rule. The stem grows upright and is colored in addition to the foliage leaves bluish- green to gray-green. The stem leaves are divided two to three times pinnatisect and have linealische tip. The flower stems are two to three times as long as the calyx. The only 1.5 to 2 mm long, scarcely 1 mm wide, pale greenish to greenish- yellow petals are shorter than the sepals usually. The einnervigen peppers grow upwards - bent, are about 15 to 25 mm long and sit on much thinner, 7 to 15 mm long stems.

• Habit
• Pods
• Stem Leaf

Ecology

The flowers usually carried out self-pollination. The heyday of the species extends mainly over the months of May to September.

The many-seeded pods are Selbstausstreuer, wind - and animal spreaders and winter stayer. The seeds spread as Klebhafter.

Locations and distribution

The Besenrauke growing in rubble weed societies and on dry slopes, in fields and on dry roadsides. She prefers more or less dry, nitrogen-rich and sandy soils.

The general area of ​​distribution extends from Europe to Asia. But is also found in North Africa and even in Greenland. In Central Europe it is considered archaeophyte.

The species is widespread in East Germany and commonly found. In other areas, it occurs rather scattered; in the mountains it is rare. In Austria, the species occurs in the Pannonian area very often, moreover, it is rather scattered to find. In Switzerland, it grows quite often, especially in the warmer regions.