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Chlorophyceae: Chlorococcales: Scenedesmaceae

Scenedesmus abundans
(Kirchner) Chodat var. abundans

Scenedesmus abundans 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 (var. abundans): Colonies of 4 cells arranging lineary; cell body ovoid or ellipsoidal in shape, 9-20 μm long, 3-5 μm wide; outer cells with long spines at both ends (6-8 μm long) and short spines at outer side (3-5 μm long); inner cells sometimes have a short spine at both ends (Illustrations of The Japanese Fresh-water Algae, 1977).


Scenedesmus abundans (Kirchner) Chodat, cell body 9 μm long, 4 μm wide, L/W=2.3, spines 5 μm long, x 640, O-ike, Shiroyama Park, Okegawa city, Saitama Pref., Japan, January 29, 2006 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Scenedesmus abundans

Images of collecting locality: O-ike, Shiroyama Park, Okegawa city, Saitama Pref., Japan, January 29, 2006 by Y. Tsukii


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