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Chlorophyceae: Chlorococcales: Scenedesmaceae

 Scenedesmus protuberans
Fritsch

Scenedesmus protuberans 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:
Similar species -->> S. carinatus;

Scenedesmus protuberans Fritsch ? (or S. quadricauda ?), a colony of 4 cells, cell body 28 μm long, 9 μm wide, spines 23-25 μm long, x 640, Sannoh-bori at Sannoh Park, Saitama city, Saitama Pref., Japan, January 9, 2005 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Scenedesmus Scenedesmus

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