The organism is subspherical to ovoid, appearing reniform in cross-section. Its annulus is slightly spiral with protruding rims. The hypotheca often bears short horns, while the epitheca extends outwards. The coloration ranges from colorless to green or brown. A stigma is typically present, and spherical cysts are formed. It inhabits both saltwater and freshwater environments. In contrast, the cell itself is either globose or biconical and may be slightly dorso-ventrally compressed. At times, the anterior end features an apical pore, though occasionally it lacks a pore and is rounded instead. The cell wall consists of three to five apical plates and zero to eight anterior intercalary plates in the epicone, with six to seven precingular plates. In the hypocone, there are two antapical and five postcingular plates. Sutures are often wide and adorned with numerous transverse striae. The girdle’s end descends somewhat, and the sulcus extends slightly into the epicone and widens posteriorly.