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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, cell body (right) 24 μm long, 6 μm wide, spines 22 μm long, x 640, near Ayu-kawa bridge, Motoyurugi, Fujioka city, Gunma Pref., Japan, December 11, 2004 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Scenedesmus protuberans Scenedesmus protuberans


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