Chlorophyceae:
Chlorococcales: Scenedesmaceae
Scenedesmus incrassatulus
Bohlin
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).
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Scenedesmus (S. incrassatulus Bohlin ??), a clone (Sak-6b) cultured with Hyponex & KCM medium,
cell body broad spindle-shaped, 14 μm long, 8 μm wide,
x 400, x 640, Kurome River, Asaka City, Saitama Pref., Japan, October 2000, by Y. Tsukii
50 μm
100 μm
150 μm; x 400 :
31 μm
63 μm
94 μm; x 640
Scenedesmus, stock Sak-6b,
axenic culture with KCM and Hyponex (December 18, 2001 to February 1, 2002),
cell body μm long, μm wide,
x 640, Kurome river, Asaka, Saitama Pref., Japan, 2000 by Y. Tsukii
31 μm
63 μm
94 μm; x 640
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