| Division | Charophyta |
| Class | Zygnematophyceae |
| Order | Desmidiales |
| Family | Desmidiaceae |
| Basionym | Onychonema laeve Nordstedt |
Thalli flat filamentous formed by attachment of cells at the center of their apex and spiny projections extending over the adjoining cell. Cells deeply constricted at the center, isthmus 6-9 μm. Semicells elongated ellipsoidal or broad hexagonal reniform, two short spines fromed both sides and directing inward. Apexes flat with two long projections to connect with neighboring cell. Cell measures 16-24 μm in length, 18-27 μm in breadth.
Ecology
Freshwater plankton prefers oligotrophic to mesotrophica and acidic waters bodies.