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Chlorophyceae: Chlorococcales: Scenedesmaceae

Scenedesmus acuminatus
(Lagerheim) Chodat var. acuminatus
Syn.: S. dimorphus (Turpin) Kützing; S. falcatus Chodat

Scenedesmus acuminatus 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. acuminatus ]: Colonies of 4 or 8 cells; cells arranging linearly (4 cells) or zigzag (8 cells); cell body elongated spindle-shaped, outer cells curved outward, 12-30 μm long, 2.5-6 μm wide; cell wall smooth (Illustrations of The Japanese Fresh-water Algae, 1977).


Scenedesmus acuminatus (Lagerheim) Chodat var. acuminatus, cell body μm long, μm wide, x 640, Kijioka Castle Ruin, Kodama town, Saitama Pref., Japan, June 2003 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Scenedesmus Scenedesmus


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