Penium margaritaceum Brébisson 1848

Division     Charophyta
Class     Zygnematophyceae
Order     Desmidiales
Family    Peniaceae
SynonymClosterium margaritaceum Ehrenberg; Penium margaritaceum var. punctatum Ralfs; Penium margaritaceum f. longum Huber-Pestalozzi

    Cells large, cylindrical with rounded apices, slightly constricted at the middle; 4-10 times longer than broad. Cells measure 75-160 µm in length, 13-21 µm in breadth. Cell wall brown in colour with some girdle bands and a sculpture of minute granules that may be scattered or more or less regularly arranged in longitudinal rows. Chloroplasts axial, longitudinal plates, two per semi cells with a central pyrenoid each.


Planktonic and it prefers oligo-mesotrophic water bodies.

Distribution in India

Goa, Jammu and Kashmir, Karnataka, Tamil Nadu, Uttar Pradesh.