Utricularia stygia

The Dark yellow water hose ( Utricularia stygia ) or Dark water hose is a species of the genus of the water hoses ( Utricularia ).

Features

The Dark yellow water hose is a deciduous, rootless, submerged aquatic plant, which reaches stature heights between 5 and 15 centimeters. The Endzipfel the water reeds that are at the edge of each ( 2) 3-6 ( 7) Wimperzähnchen on. The yellow crown is slightly crowded reddish. The lower lip measures 9 to 11 × 13 to 15 millimeters. The spur has a length of 4 to 5 millimeters.

The flowering period extends from July to August.

Occurrence

The Dark yellow water hose grows in Germany in oligo-to mesotrophic waters such as ditches, ponds, bog and shallow shore areas of lakes. The species is rare in Bavaria, Baden -Württemberg (Black Forest, Alpine foothills ), Rhineland -Palatinate, North Rhine -Westphalia and Saxony Northeast. In Schleswig -Holstein, it is considered extinct. The range of the species is known only insufficiently.

Documents

• Eckhart J. Jäger, Klaus Werner ( eds.): Excursion Flora of Germany. Founded by Werner Roth painter. 10, revised edition. Volume 4: Vascular Plants: Critical band, Elsevier, Spektrum Akademischer Verlag, Munich / Heidelberg 2005, ISBN 3-8274-1496-2.