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Chlorophyceae: Chlorococcales: Scenedesmaceae

Scenedesmus incrassatulus
Bohlin

Scenedesmus incrassatulus Genus: Colonies of 4 (or 2, 8, 16) cells attached side by side, arranged linearly or zigzag; cell body elliptical or spindle or crescent in shape; terminal cells with spiny projections in many species; cell wall usually smooth, but in some species granulated or dented or ridged (Illustrations of The Japanese Fresh-water Algae, 1977).
Species: Cell body spindle-shaped, 10-28 μm long, 2.5-8 μm wide; 4-8 cells attached side by side (1 or 2 rows); without spiny projections; outer cells slightly curved inward, inner cells straight (Illustrations of The Japanese Fresh-water Algae, 1977).


Scenedesmus incrassatulus Bohlin (or S. asymmetricus ?), a colony of 8 cells, cell body 12 μm long, 3 μm wide, very short spines present ? in some daughter cells, x 640, near Imori pond, Myoko-kogen (Myoko highland), Myoko village, Niigata Pref., Japan, November 7, 2004 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Scenedesmus Scenedesmus


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