Family: Colonial, usually with a gelatinous coat; 4 daughter cells are connected with filaments derived from their maternal cell wall; cell body spherical, elliptical or heart-shaped; a single chloroplast plate-like or cup-shaped containing a pyrenoid; asexual reproduction by autospore, sexual reproduction by fertilization of egg and sperm.
Genus: (Guide book to the "Photomicrographs of the Freshwater Algae", 1998).
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Similar Genus -->> Selenodictyum; Selenastrum; Kirchneriella
22-26 x 6 μm