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Chlorophyceae: Chlorococcales: Scenedesmaceae

Scenedesmus bicaudatus
(Hansgirg) Chodat

Scenedesmus bicaudatus 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 ellipsoidal, both ends rounded, 8-13 μm long, 2-4.5 μm wide; outer cells with a spiny projection (3-13 μm long) at one end (Illustrations of The Japanese Fresh-water Algae, 1977).


Scenedesmus bicaudatus (Hansgirg) Chodat var. ?, cell body 11 μm long, 4 μm wide, spines 11 μm long, L/W=2.8, S/L=1.0, x 640, Dewa Park, Koshigaya, Saitama Pref., Japan, July 2001 by Y. Tsukii
Single cells
scale 50 μm scale 100 μm scale 150 μm; x 400 : scale 31 μm scale 63 μm scale 94 μm; x 640
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A colony of two cells
Scenedesmus


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