| Division | Charophyta |
| Class | Zygnematophyceae |
| Order | Desmidiales |
| Family | Desmidiaceae |
| Basionym | Staurastrum dejectum Brébisson |
| Synonym | Binatella dejecta Brébisson; Staurastrum dejectum f. majus West & G.S.West |
Cells tri-radiate or quadri-radiate about 1.4 times longer than broad. Cell deeply constricted with slightly elongate Isthmus; sinus widely open; cells measure 11-38 µm in length; 15-40 µm in breadth (with spines), 12-17 µm in breadth (without spines), 6-9 µm broad at isthmus. Semi cells bowl-shaped with short upwardly projected spines at each apical angle. Cell wall smooth; chloroplast axile, one per semi cell with a central pyrenoid each.
Ecology
It prefers oligo-mesotrophic water bodies.
Distribution in India
Jammu and Kashmir; Kerala; Madhya Pradesh; West Bengal (Gupta, 2012). Ezhichur Lake in Kancheepuram District (Maheswari and Baluswami, 2017) Tamil Nadu.