Genus: Cell body elongated spindle in shape, straight or curved, sharply pointed at both ends;
(Guide book to the "Photomicrographs of the Freshwater Algae", 1998).
Species: Cell body elongated fusiform, tapering toward sharply pointed ends,
40-68 μm long, 2 μm wide;
two chloroplasts parietal, extending into the both ends, without pyrenoids;
cell division produces 2, 4, 8 or 16 "autospores"
(Photomicrographs of the Freshwater Algae, 1996).
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