Species: Colonies of 2, 4, 8, 16 cells, enclosed by a fusiform gelatinous sheath;
cell body elongated fusiform to slightly asymmmetric fusiform, narrowed into the pointed ends,
20-35 μm long, 3-4 μm wide;
chloroplasts a single, parietal, laminate, with one or two pyrenoids
(Photomicrographs of the Freshwater Algae, 15: 35, 1995).
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