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Chlorophyceae: Chlorococcales: Scenedesmaceae

Scenedesmus acutiformis

Scenedesmus 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: Colonies of 2, 4 cells arranging linearly; cell body elongated ellipsoidal, with 1-2 short spiny projections at both ends, 9-13 μm long, 3.5-5 μm wide; each cell with longitudinal rows of small dented projections on both sides; outer cells have an additional row of dented projections arranging outside (Illustrations of The Japanese Fresh-water Algae, 1977).


Scenedesmus acutiformis Schröder, cell body 12-14 μm long, 4.5 μm wide, x 640, Iruma river, Kami-terayama, Kawagoe city, Saitama Pref., Japan, January 18, 2004 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Scenedesmus acutiformis Scenedesmus acutiformis Scenedesmus acutiformis


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