Cosmarium granatum Brébisson ex Ralfs 1848

Division     Charophyta
Class     Zygnematophyceae
Order     Desmidiales
Family    Desmidiaceae
SynonymEuastrum granatum (Brebisson ex Ralfs) F.Gay; Cosmarium granatum f. pentagonum Raciborski

    Cells small sized, 1.5-1.75 times longer than broad, measures 35-38 µm length and 23-26 µm width. Cells deeply constricted at the center and sinus is closed, isthmus is 6-8 µm. Semicell trapezoid in shape, basal angle and end of apex rounded or slightly flatten with sparsely punctuated cell wall. Semicells elliptical in both lateral and vertical view.


Thalli collected as plankton from mesotrophic freshwater bodies.