Gamophyceae: Desmidales: Mesotaeniaceae
(Charophyceae: Zygnematales: Mesotaeniaceae)


Family: Cell body cylindrical or spindle-shaped, loosely attached with each other to form a filamentous colony; cell wall smooth, consists of a single partition, one layer; 1-2 chloroplasts plate- or ribbon-like, with pyrenoids; a single nucleus centrally placed.
Genus: Cell body usuall large, spindle or cylindroid in shape, rounded at both ends; two chloroplasts star-shaped at cross-section, consisting of a central rod and radially arranged dented laminae (Illustrations of The Japanese Fresh-water Algae, 1977).

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