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Gamophyceae: Zygnematales: Desmidiaceae

 Cosmarium meneghinii
Brébisson ex Ralfs var. meneghinii

Cosmarium meneghinii 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 meneghinii var. reinschii Istvanffi, cell body 18 μm long, 15 μm wide, L/W=1.2, isthmus 5 μm wide, x 640, No.6, Omine-numa (pond/marsh), Omine, Minakami town (formerly Tsukiyono town), Gunma Pref., Japan, April 15, 2007 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Cosmarium meneghinii
Cell body 18 μm long, 15 μm wide, L/W=1.2, isthmus 5 μm wide, x 640
Cosmarium meneghinii Cosmarium meneghinii
Cosmarium meneghinii Cosmarium meneghinii

Images of collecting locality: No.6, Omine-numa (pond/marsh), Omine, Minakami town (formerly Tsukiyono town), Gunma Pref., Japan, April 15, 2007 by Y. Tsukii

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