Lythrum hyssopifolia

Ysopblättriger loosestrife ( Lythrum hyssopifolia )

The Ysopblättrige loosestrife ( Lythrum hyssopifolia ), also referred to as hyssop loosestrife, is a very rare occurring in Central Europe, midget representatives of the Lythraceae ( Lythraceae ). It flowers from June to September.

Features

The one-year ( therophytische ), herbaceous plant reaches a height of about 5 to 30 centimeters. It grows mostly upright, open spots somewhat decumbent, unbranched branches to strong, more or less colored teal and completely bald. The stem has narrow, membranous longitudinal edges. The stem leaves are linear - lanceolate, about 2.5 inches long and 0.5 inches wide, mostly alternate (bottom often against constantly ) pedunculated and sessile or short. They have two small, pfriemliche, lasting bracts. The calyx teeth and between teeth are about the same length. The flowers are usually solitary or in pairs in the axils and are stalked in the central stem portion short. They have tube- to funnel-shaped cup axis. The 4-6 purple red petals have a length of only 2 to 3 millimeters and are therefore half as long as the axle cups. The usually four to six stamens are of equal length. The capsule is of cylindrical shape.

The spread of the type carried by insects or self-pollination. Add to that the water distribution.

Occurrence

Habitat requirements

Lythrum hyssopifolia grows in dwarf Bins companies ( Isoëto - Nanojuncetea bufonii ) to banks, ditches cleared, paths and field margins. Preference is damp or change aces, nutrient-rich, often slightly salty loam and clay soils. Such locations inhabited the dwarf species as pioneer. With progressive succession it is rapidly displaced by stronger competitive plants. Your diasporas can but very long survive in the soil and appear suddenly in Neuentstehen of Rohbodenflächen ( mainly as a result of floods or by mechanical tillage).

Dissemination

The Ysopblättrige loosestrife is found in temperate and southern Europe and North Africa. East of it penetrates to the Altai and Iran. Furthermore, the kind in America, Australia and New Zealand to find. In Central Europe it is rare to very rare and endangered, some threatened with extinction. Regionally, the species is now entirely disappeared. You lack, among others, in the Alps and in North-West Germany.

Endangering

• Red List of Germany: Category 2 - " high risk "
• Red List Austria: Category 2 - " high risk "
• Red List of Switzerland: Category 1 - " Endangered"