Family: Unicells or colonies of non-fixed number of cells; cell body variable in shape;
one or more chloroplasts variable in shape; a sexual reproduction by autospore
(Illustrations of The Japanese Fresh-water Algae, 1977).
Genus: Colonies of 4, 8, 16 or 32 cells in a gelatinous sheath; cell body long cylindroid, strongly curved or twisted, both ends rounded; a chloroplast full within the cell; a single pyrenoid (Guide book to the "Photomicrographs of the Freshwater Algae", 1998). |
50 μm
100 μm
150 μm; x 400 :
31 μm
63 μm
94 μm; x 640
