image_list image_listE

Chlorophyceae: Chlorococcales: Scenedesmaceae

 Scenedesmus quadricauda
(Turpin) Brébisson sensu Chodat, 1913

Scenedesmus quadricauda 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. quadricauda ]: Colonies of 2, 4 or 8 cells arranging linearly; cell body elongated ellipsoidal, 11-18 μm long, 3.5-7 μm wide; terminal cells with long spiny projections (10-17 μm long); cell wall smooth (Illustrations of The Japanese Fresh-water Algae, 1977).

Scenedesmus quadricauda, a clone (Sak-6a) cultured with Hyponex & KCM medium, spines slightly curved and shorter than cell body (S/L=0.7), cell body 14 μm long, 4.7 μm wide, spines 8 μm long, L/W= 3.0, S/L = 0.6, x 400, x 640, Kurome River, Asaka City, Saitama Pref., Japan, October 2000, 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 quadricauda, stcck Sak-6a, flask culture, x 400, x 640, Kurome River, Asaka city, Saitama, 2000 by Y. Tsukii
Scenedesmus Scenedesmus

Please click on images for viewing enlarged.
Copyright Protist Information Server