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Chlorophyceae: Chlorococcales: Scenedesmaceae

Scenedesmus longus
Meyen, Syn: S. brevispina (G. M. Smith) Codat

Scenedesmus longus 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 longus, each cell with short projections at both ends, cell body 16 μm long, 5.5 μm wide, L/W= 2.9, Uruguay 1999, photo 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


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