Species:
Cell body ellipsoid, ellipsoidal ovoid or broad ellipsoid,
12-22 μm, 8-18 μm wide; papilla hemispherical;
flagella nearly body-length or more; chloroplast cup-shaped;
a pyrenoid spherical or broad ellipsoid, located at posterior half of the cell body;
a nucleus centrally located; stigma circular or disc-shaped at anterior half of the cell body;
(Süßwasserflora von Mitteleuropa 9, Chlorophyta I, 1983).
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