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Gamophyceae: Zygnematales: Desmidiaceae

Cosmarium maculatum
Turner

Cosmarium maculatum 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: Cell body large in size, 138-168 μm long, 73-90 μm wide, L/W=2; constriction 39-45 μm wide; semicells half-elliptical or ovoidal; cell wall dotted (Illustrations of the Japanese fresh-water algae, 1977).

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Similar species -->> C. turgidum (Eudysphinctium);


Cosmarium maculatum Turner, cell body 136 μm long, 64 μm wide, x 200, x400, x 640, Hiroshima Pref., Japan, 1998, by Y. Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400 : scale 31 μm scale 63 μm scale 94 μm; x 640
Cosmarium Cosmarium Cosmarium Cosmarium Cosmarium
Cosmarium Cosmarium Cosmarium

Cosmarium maculatum Turner: Cell body large in size, 138-168 μm long, 73-90 μm wide, L/W=2; constriction 39-45 μm wide; semicells half-elliptical or ovoidal; cell wall dotted (Illustrations of the Japanese fresh-water algae, 1977).


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