Thlaspi caerulescens

Mountain Täschelkraut ( Noccaea caerulescens )

The mountain - Hellerkraut, mountain Täschelkraut, alpine or pre-alpine Hellerkraut Hellerkraut ( Noccaea caerulescens ) is a species in the family of cruciferous plants ( Brassicaceae). This European species is to take zinc in the location and store the tissue. The concentration of zinc in the parts of the plant can be up to about 300 times the amount, which comprise the majority of plants and tolerance.

• 4.1 Notes and references

Description

The mountain - Heller herb grows as a perennial herbaceous plant, reaching a height of 5 to 25 cm. It has not flowering rosettes, but in contrast to similar mountain Hellerkraut no streamer -like elongated shoots. The leaves are blue-green, bald and greasy. The white to blue- violet flowers are in elongated, racemose inflorescences.

Occurrence

The mountain - Hellerkraut präalpin is widespread in the southern, central and eastern mountain ranges. The plant grows from March to May sociable in mountain meadows or rasigen embankments. It prefers lime-free, moderately acidic, humus-rich loamy soil. Due to frequent self-fertilization, which often receives newly acquired properties well in small isolated occurrences, the mountain - Heller herb is rich in forms.

System

It is therefore considered as a collective species of several small species. Synonyms for Noccaea caerulescens ( J.Presl & C.Presl ) FKMey. Thlaspi caerulescens are J.Presl & C.Presl and Thlaspi alpestre (L.) Jacq non L. ..

Central European subspecies

• Noccaea caerulescens subsp. brachypetalum ( Jord. ) ​​usually has a ästigen stalk, and will remain the anthers yellow or reddish. The bloom are 2-3 mm long and are slightly longer than the calyx. It grows in Austria, for example, frequently in Montafon.

• Noccaea caerulescens subsp. caerulescens usually has a simple stem, the dust bag change color blue violet. The bloom is to 3, 5 mm long and are twice as long as the calyx. The plant is two to three years old, the petals are as long as or shorter than the stamens. It is a plant of the mountain, rare valley meadows in the foothills, Black Forest, Rhenish Slate Mountains, Thuringia, Saxony, the Fichtel Mountains and the Bavarian Forest.

• Noccaea caerulescens subsp. calaminaris ( Lej. ) Mag, the calamine Hellerkraut is persistent and the bracts longer than the stamens. The subspecies, which is also considered as a species occurs in premolars heavy metal lawn, for example in Aachen and Osnabrück.