Potamogeton compressus

Flachstängeliges pondweed ( Potamogeton compressus )

The submerged living Flachstängelige pondweed ( Potamogeton compressus ) is a perennial representatives of the family of pondweed family ( Potamogetonaceae ). It flowers underwater between June and September. Underwater his flowers are pollinated ( hydrophilicity ). Its equipped with a small hump fruits are also spread through the water ( Hydrochorie ).

Occurrence

That in Germany by eutrophication and water pollution, endangered Flachstängelige pondweed occurs in meso-to eutrophic, standing or slow- flowing waters. It is in Germany on the Red List of vascular plants and has become locally very rare. If you do, before the rest of Europe, Asia, North America and the temperate latitudes of the southern hemisphere.

Identifying

The stem of the Flachstängeligen spawning herb grow to a length of 2 m and is usually sparse, on the other hand often highly branched in standing waters in rivers. Especially characteristic about him is that he is compressed and often winged appears. The leaves are all submerged, colored green or brown, and can be wide and 20 cm long and 4 cm. At the bottom refer to these often thickened glands. They also have five parallel veins, three of which are configured as distinct main veins. In between are quite a few annoying transverse fiber bundles forming a very difficult recognizable central reservation system. An important particulars is the most rounded tip that rarely has a small patch tip. The small, reduced, usually 10 to 15 individual flowers are available in a maximum of 2 cm long spike, whose stem is 3-12 cm long. The small fruits are about 4 mm beaked short. The pondweed also forms fan-like winter buds ( turion ).