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Chlorophyceae: Chlorococcales: Scenedesmaceae

Scenedesmus longispina
(W. et G.S. West) Chodat
Syn.: S. quadricauda (Turpin) Brebisson var. longispina (Chodat) G.M. Smith

Scenedesmus longispina 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: Cell body cylindrical, outer cells slightly curved outward, 9.5-11 μm long, 3.5-4 μm wide; each cell with three short spiny projections at both ends (Illustrations of The Japanese Fresh-water Algae, 1977).
Similar genus -- S. quadricauda


Scenedesmus longispina Meyen ?, cell body 8 μm long, 2.5 μm wide, L/W=3.2, spines 10-12 μm long, x 640, Kurome river, Asaka city, Saitama Pref., Japan, January 8, 2006 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Scenedesmus longispina


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