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Chlorophyceae: Chlorococcales: Scenedesmaceae

Scenedesmus ecornis
var. disciformis Chodat

Scenedesmus ecornis 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: Cells attached side by side along 3/4 of their side (arranging in 1 or 2 rows), inner spaces absent (cf. S. arcuatus); cell body ellipsoidal or ovoid without spiny or dented projections, 7-20 μm long, 4-10 μm in diam. (Illustrations of The Japanese Fresh-water Algae, 1977).


S. ecornis var. disciformis (or Scenedesmus arcuatus var. platidisca ?), cell body 9 μm long, 5 μm wide, x 640, wetland, near Town Hall, Shobu town, Saitama Pref., Japan, June 27, 2004 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
Scenedesmus ecornis Scenedesmus ecornis


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