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Chlorophyceae: Chlorococcales: Scenedesmaceae

 Scenedesmus ellipsoideus
Chodat var. ellipsoideus

Scenedesmus ellipsoideus 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. ellipsoideus ]: (Illustrations of The Japanese Fresh-water Algae, 1977).

Scenedesmus ellipsoideus Chodat var. ellipsoideus, cell body 10-13 μm long, 7 μm wide, x 640, joining point of Omoi river and Shin river (near Omoigawa-ryokuchi), Daigyoji, Oyama city, Tochigi Pref., Japan, March 30, 2006 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Scenedesmus ellipsoideus Scenedesmus ellipsoideus

Images of collecting locality: Joining point of Omoi river and Shin river (near Omoigawa-ryokuchi), Daigyoji, Oyama city, Tochigi Pref., Japan, March 30, 2006 by Y. Tsukii

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