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Gamophyceae: Zygnematales: Desmidiaceae

 Cosmarium subcrenatum
Hantzsch var. subcrenatum

Cosmarium subcrenatum Genus: Unicellular; variable in shape; a constriction at the center of the cell body; mostly longer than wide; flattened; each semicell hemispherical, spherical, ellipsoidal, rectangular, pyramidal or kidney-shaped; no apical indentation (Illustrations of The Japanese Fresh-water Algae, 1977).
Species:

Cosmarium subcrenatum Hantzsch var. subcrenatum ?, cell body 40 μm long, 30 μm wide, isthmus 17 μm wide, x 400, x 640, Ikenokochi (or Ikenokouchi) marsh, Tsuruga city, Fukui Pref., Japan, September 11, 2004 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Cosmarium Cosmarium

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