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Gamophyceae: Zygnematales: Desmidiaceae or Closteriaceae

Closterium strigosum
Brébisson

Closterium strigosum Genus: Cell body crescent in shape (long, curved, tapered at both ends); cross section rounded; cell wall smooth or with longitudinal lines, bands on the cell wall in some species; chloroplast laminae ridged and radially arranged, which makes cross section star-shaped; pyrenoids aligned or scattered (Illustrations of The Japanese Fresh-water Algae, 1977).
Species: Cell body elongated, slightly curved, inner side concave, both ends broadly rounded, 150-410 μm long, 10-20 μm wide, L/W=10-18 (cf. C. idiosporum, 220-312 μ, L/W=20-26); 3-11 pyrenoids in each semicell (Illustrations of The Japanese Fresh-water Algae, 1977).


Closterium strigosum Brébisson ?, cell body (right) 150 μm long, 9 μm wide, L/W=16.7, x 640, near Imori pond, Myoko-kogen (Myoko highland), Myoko village, Niigata Pref., Japan, November 7, 2004 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Closterium Closterium Closterium


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