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Chlorophyceae: Chlorococcales: Scenedesmaceae

 Scenedesmus acutus
f. antenniformis Uherkovich

Scenedesmus 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:

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
scale 50 μm scale 100 μm scale 150 μm; x 400 : scale 31 μm scale 63 μm scale 94 μm; x 640
Scenedesmus Scenedesmus

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
scale 31 μm scale 63 μm scale 94 μm; x 640
Scenedesmus Scenedesmus Scenedesmus

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