Lythrum

Usually purple loosestrife ( Lythrum salicaria )

The blood pasture or grazing Riche Riche ( Lythrum ) are a genus of flowering plants in the family of Lythraceae ( Lythraceae ). To this genus include about 35 species from all continents except South America. The botanical genus name Lythrum derives from the Greek word λύθρον ( lýthron ) for dirty blood.

Description

The Lythrum species grow as annuals to perennial herbaceous plants or subshrubs. The stems of young plants are cylindrical or square. The alternate and spiral, opposite or in threes arranged in whorls leaves are petiolate to sessile. The simple leaf blades have a smooth margin. Stipules absent.

The flowers appear singly or in very differently constructed inflorescences with bracts. The stalked or sessile flowers are hermaphroditic and four or sechszählig. The flower cup ( hypanthium ) is closely bell-shaped or Roehrig. The four or six sepals are unequal (but not two-lipped ) Roehrig, grown bell-shaped or urn -shaped. In some species, an outer cup is available. There are usually four or six petals present in a few species they are missing. The mostly pink on purple to blue, rarely white, ovoid or verkehrteiförmigen petals are usually not equal to but not fused two-lipped, sometimes they are radial symmetry. The two to twelve distinctly unequal, fertile stamens are with each other freely, but fused with the flower cups. Two carpels are fused into a superior ovaries. An ovary compartment contains (rarely one to ) usually five to fifty ovules. The style ends in a capitate stigma. Pollination is mostly by insects ( entomophily ). The zweifächrigen capsule fruits contain wingless, red - brown, about 1 mm large seeds.

System

The genus Peplis, with the domestic kind in Central Europe Sumpfquendel ( Lythrum Portula ) is, according to new findings associated with the blood pasture plantains.

The genus includes 35 species Lythrum.

In Central Europe the following species are indigenous: