Gamophyceae:
Zygnematales: Desmidiaceae
Cosmarium pandriforme
Turner
Subgenus [Eucosmarium]:
Cell body dorso-ventrally compressed, with strong constriction at the center,
transverse section elliptical or diamond-shaped.
Section [ Cyclidium ]:
Cell surface smooth; semicells half circle, half ellipsoid
(Illustrations of The Japanese Fresh-water Algae, 1977).
Species[ magnum ]:
(Illustrations of The Japanese Fresh-water Algae, 1977).
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Cosmarium pseudopyramidatum Lundell var. pseudopyramidatum,
cell body 64 μm long, 41 μm wide, L/W=1.6, isthmus 16 μm wide,
x 640, Yukawa-numa (pond), Nishiwaga-machi (town), Iwate Pref., Japan, July 28, 2007 by Y. Tsukii
31 μm
63 μm
94 μm; x 640
Cosmarium pseudopyramidatum Lundell var. pseudopyramidatum,
cell body 64 μm long, 42 μm wide, L/W=1.5, isthmus 16 μm wide,
x 640, Yukawa-numa (pond), Nishiwaga-machi (town), Iwate Pref., Japan, July 28, 2007 by Y. Tsukii
31 μm
63 μm
94 μm; x 640
Images of collecting locality:
Yukawa-numa (pond), Nishiwaga-machi (town), Iwate Pref., Japan, July 28, 2007 by Y. Tsukii
Please click on images for viewing enlarged.
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