Species: Cell body broad ellipsoidal or nearly spherical, 17-24 μm long, 15-24 μm wide;
chloroplast cup-shaped with a large concavity; papilla present, broad with flattend apex;
a pyrenoid anterio-posteriorly depressed, located at posterior half of the cell body; nucleus at anterior
(Süßwasserflora von Mitteleuropa 9, Chlorophyta I, 1983).
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