Chlorophyceae:
Chlorococcales: Scenedesmaceae
Scenedesmus acutus
f. antenniformis Uherkovich
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:
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Scenedesmus acutus f. antenniformis Uherkovich ? (or S. acutus Chodat var. acutus ?),
cell body 13 μm long, 4.5 μm wide, L/W=2.9,
x 640, Koshigaya, Saitama Pref., Japan, July 2001 by Y. Tsukii
50 μm
100 μm
150 μm; x 400 :
31 μm
63 μm
94 μm; x 640
Scenedesmus acutus ?, stock Sks-21,
axenic culture with KCM and Hyponex (January 9, 2002 to February 18, 2002),
cell body μm long, μm wide,
x 640, Koshigaya, Saitama Pref., Japan, July 2001 by Y. Tsukii
31 μm
63 μm
94 μm; x 640
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