| Division | Charophyta |
| Class | Zygnematophyceae |
| Order | Desmidiales |
| Family | Desmidiaceae |
Cells large, found in pairs; semi cells circular, slightly projected at apices; deeply constricted, sinus widely open. Chloroplast with a pyrenoid, one per semi cell, axile in distribution. Cells measure 19-52 µm in length, 13-27 µm in breadth, 6-15 µm broad at isthmus.
Ecology
It prefers mesotrophic and circumneutral water bodies.
Distribution in India
Ezhichur, Kancheepuram District, Kovanoor lake, Kalavasal pond, Sivagangai District; Tamil Nadu; Karnataka (Bharati and Hegde, 1982), Gurjarat (Gupta, 2012); Andaman and Nicobar Islands (Gupta, 2012); World: Indonesia (Scott and Prescott, 1981); Ireland, Scotland, Australia (West and West, 1908)