Cosmarium dispersum Johnson 1895

Division     Charophyta
Class     Zygnematophyceae
Order     Desmidiales
Family    Desmidiaceae

    Cells medium size, length and width almost equal. Cells measure 42–49 µm length and 41–46 µm width. Cell margins gently undulated and often less distinct toward the apex. Apices truncated or slightly rounded and cells finely punctuated. Cells deeply constricted at the center, sinus deep and narrowly linear and isthmus 11–13 μm. Semicells semi-circular in shape with truncated end, elliptical in vertical view and circular in lateral view.


Thalli collected as plankton from Ponds and Lakes.

Distribution in India

Tamil Nadu, Uttarakhand (Misra et al., 2008).