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Chlorophyceae: Chlorococcales: Scenedesmaceae

Scenedesmus acuminatus
(Lagerheim) Chodat var. acuminatus
Syn.: S. dimorphus (Turpin) Kützing; S. falcatus Chodat

Scenedesmus acuminatus 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. acuminatus ]: Colonies of 4 or 8 cells; cells arranging linearly (4 cells) or zigzag (8 cells); cell body elongated spindle-shaped, outer cells curved outward, 12-30 μm long, 2.5-6 μm wide; cell wall smooth (Illustrations of The Japanese Fresh-water Algae, 1977).


Scenedesmus acuminatus (Lagerheim) Chodat, cell body μm long, μm wide, L/W=, x 640, a drainage ditch around Sakura castle ruin park (and National Museum of Japanese History), Sakura city, Chiba Pref., Japan, March 16, 2008 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Scenedesmus acuminatus Scenedesmus acuminatus

Images of collecting locality: A drainage ditch around Sakura castle ruin park (and National Museum of Japanese History), Sakura city, Chiba Pref., Japan, March 16, 2008 by Y. Tsukii


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