Species:
Cell body ellipsoidal or nearly spherical, up to 20-30 μm long, 18-26 μm wide;
a very small papilla present (inconspicuous ?);
a stigma circular in shape, located at equator; chloroplasts cup-shaped with large central concave;
a pyrenoid close to posterior end of the cell body
(Süßwasserflora von Mitteleuropa 9, Chlorophyta I, 1983).
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