Species:
Cell body ovoid-ellipsoidal, 9-17 μm long, 8-15 μm wide;
anterior cellwall separated from the cell body (papilla extended through the anterior half of the cell);
chloroplast cup-shaped; a pyrenoid located posteriorly; papilla absent;
stigma located at equator of the cell; nucleus anterior
(Süßwasserflora von Mitteleuropa 9, Chlorophyta I, 1983).
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