Genus: Unicellular; planktonic; cell body elongated spindle-shaped or crescent in shape, laterally unsymmetrical,
both ends attenuated; autospores attached each other at their one ends arranging radially;
a single chloroplast plate-like, with a pyrenoid
(Guide book to the "Photomicrographs of the Freshwater Algae", 1998).
Species:
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50 μm
100 μm
150 μm; x 400 :
31 μm
63 μm
94 μm; x 640
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