| Division | Chlorophyta |
| Class | Trebouxiophyceae |
| Order | Chlorellales |
| Family | Oocystaceae |
| Synonym | Nephrocytium naegelii Grunow |
Colonies oblong or slightly rounded in shape consists of 4, 8, or rarely 1, 2, or 16 cells enclosed by a gelatinous envelope. Cells arranged somewhat spirally in young and irregularly in old colonies. Cells more or less reniform with rounded ends. Colonies 35-50 μm in diameter and cells measure 12-24 μm in length and 7-16 μm in breadth. Chloroplast single, parietal with single pyrenoid.
Ecology
Free floating freshwater alga occurs in Lakes and Ponds.