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

 Desmidium coarctatum
Nordstedt

Desmidium coarctatum Genus: Cell body short, with a deep constriction at the center, apical view fusiform or radially symmetrical; cell apexes without spiny projections; intermediate zone or folded structure appeared during cell division; zygospores remain within their mother cells (Illustrations of The Japanese Fresh-water Algae, 1977).
Species:

Desmidium coarctatum Nordstedt, cell body 21 μm long, 21 μm wide, L/W=, cell body 19 μm long, 26 μm wide, L/W=, x 200, x 400, x 640, No.1, Kashibaru marsh, Karatsu city, Saga Pref., Japan, November 2006 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Desmidium coarctatum Desmidium coarctatum Desmidium coarctatum Desmidium coarctatum

Images of collecting locality: No.1, Kashibaru marsh, Karatsu city, Saga Pref., Japan, November 22, 2006 by Y. Tsukii

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