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Chlorophyceae: Chlorococcales: Scenedesmaceae

 Scenedesmus insignis
(W. et G.S. West) Chodat
Syn.: S. quadricauda var. insignis W. et G.S. West
Indentified by Eberhard Hegewald (Research Centre Jülich, ICG III Phytosphere, Germany)

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:

Scenedesmus insignis (W. et G.S. West) Chodat, stock Ito-2, axenic culture with KCM & Hyponex (February 27 to March 29, 2003), cell body μm long, μm wide, x 640, Otto-Numa (pond) Chosei-chi, Tsuchiura city, Ibaraki Pref., Japan, July 2002 indentified by E. Hegewald, photo 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 Scenedesmus Scenedesmus Scenedesmus Scenedesmus Scenedesmus Scenedesmus Scenedesmus Scenedesmus

Scenedesmus insignis (W. et G.S. West) Chodat, stock Ito-2, (July 26 to August 28, 2005), cell body 10 μm long, 4 μm wide, L/W=2.5, spiny projections about 10 μm long, x 640, Otto-Numa (pond) Chosei-chi, Tsuchiura city, Ibaraki Pref., Japan, July 2002 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Scenedesmus Scenedesmus Scenedesmus
Cell body μm long, μm wide, L/W=, x 640
Scenedesmus Scenedesmus Scenedesmus

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