portrait

Description:

Euastrum attenuatum WOLLE var. splendens (F.E.FRITSCH & RICH.) GRÖNBLAD

 The cells are almost two times longer than wide. The cell halves have three lobes, the lateral lobes are broad and shallowly undulated at the ends. The vertex lobes are widened at the ends and are surrounded with a collar of warts. In the center of each cell half and on both sides of them there are broad swellings. The central cuts open outwards in an acute-angle.

 .  Dimension: Length 57 – 60 µm, width 33 – 35 µm

 Ecology: In shallow, moderate acidic waters of fens and bogs.

 Occurrence: South America (Anden up to altitude of 3000 m toTierra del Fuego), Africa (Natal, Sudan), firstly recorded for Europe!