| Division | Chlorophyta |
| Class | Chlorophyceae |
| Order | Sphaeropleales |
| Family | Scenedesmaceae |
| Basionym | Staurogenia tetrapedia Kirchner |
| Synonym | Pediastrum tetras var. quadratum Playfair |
Colonies of 4 celled or groups of 16 or more celled multiple colonies. Four celled colonies quadrate with minute rectangular space at the center. Cells flatten and triangular with rounded ends. Margins of cells always concave. Cells measure 5-10 μm in diameter. Four-celled colonies measure 9-18 μm in diameter
Ecology
Freshwater alga prefers meso-eutrophic water bodies.
Distribution in India
Hyderabad, Andhra Pradesh; Damodar Valley, Bihar; Coorg, Karnatake; Azhicode, Ochira, Kerala; Museum Pond, Chennai, Pathinettampadi lake, and Parakkai lake, and pond at Mantharamputhoor, Ethancaud-Puliangulam Pond, Agastheeswaram Taluk, Kanyakumari, Tamil Nadu; Ponds and Tanks, Barrackpore, West Bengal.