Gamophyceae:
Zygnematales: Desmidiaceae
Cosmarium trachypleurum
Lundell var. cornutum Borge
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:
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Similar species-->>
C. furcatospermum;
Cosmarium trachypleurum Lundell var. cornutum Borge ?,
cell body 49 μm long, 40 μm wide, L/W=1.2, isthmus 14 μm wide,
x 640, a small marsh pond at Iwakagami-gunseichi (gregarious flowering area of Scizocodon soldanelloides), near Nagori-ga-hara (bog), Sukawa highland, Kurikoma mountain, Ichinoseki city, Iwate Pref., Japan, June 24, 2007 by Y. Tsukii
31 μm
63 μm
94 μm; x 640
Images of collecting locality:
a small marsh pond at Iwakagami-gunseichi (gregarious flowering area of Scizocodon soldanelloides), near Nagori-ga-hara (bog), Sukawa highland, Kurikoma mountain, Ichinoseki city, Iwate Pref., Japan, June 24, 2007 by Y. Tsukii
Please click on images for viewing enlarged.
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