Gamophyceae: Zygnematales: Desmidiaceae
(Charophyceae: Zygnematales: Desmidiaceae)


Genus: Cell body small, length = width, strong constriction at its center; semicells inverted triangular, ellipsoidal, rectangular, etc. in shape; straight or slightly curved spiny projections at each corner; one pyrenoid in each semicell; cell wall smooth (Illustrations of The Japanese Fresh-water Algae, 1977).

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