Ruppia cirrhosa

Schraubige Salde ( Ruppia cirrhosa )

The Schraubige Salde (also called beach - Salde ) ( Ruppia cirrhosa, Syn Ruppia spiralis L. ex Dumort. ) Is a perennial, evergreen, salt water, submerged living plant from the family of the balances of plants ( Ruppiaceae ). The formation of above-ground, independently viable foothills of the plant can reproduce vegetatively. There is talk here of monopodial fragmentation. The flowers are pollinated by water. For this purpose, the plant forms a long spikes stalk, at whose head two flowers are formed, which are somewhat raised above the water surface up. The flowers produce pollen which floats on the water surface and is carried by the flow to other flowers.

Occurrence

The Schraubige Salde is scattered on underwater meadows in shallow coastal waters. In the Baltic Sea, they are mostly wave- exposed sites on sand. However, the plant colonized lagoons, tidal creeks, saline ponds and ditches. Its distribution is restricted to the temperate latitudes of the northern and southern hemispheres. There they always inhabited only the littoral, close to the sea coast areas. In Germany it is on the red list of vascular plants and is classified as endangered there. Inland are no known stocks. Their habitat is the plant formation of the salt plant corridors, where it has its main occurrence. It is also the Kennart the Association Ruppietum cirrhosae.

Identifying

The Schraubige Salde is about 15 to 40 cm long and has a filamentous habit. The stem is rooted at the nodes. Your narrow linealischen, double-spaced stationary blades are only 1 mm wide, obtuse, scheidig at the base and very finely serrated at the top. The hermaphrodite flowers unscheinbarenm have no perianth and are arranged in terminal, zweiblütigen ears. The two stamens of each flower obscure the very short tepals. There are also 4 free, upper permanent ovary, the flowering time is June to September, as the ear are stalked relatively long. The ears can handle up to 8 cm long and is extended after fertilization and curled spirally. The small fruits are ovoid wrong.