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Gamophyceae: Zygnematales: Desmidiaceae or Closteriaceae

Closterium cornu
Ehrenberg var. cornu

Closterium cornu 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 [ var. cornu]: Cell body slightly curved, tapered at both ends, but inner side at center straight, 95-160 μm long, 5-(7.8-13) μm wide, L/W = 16-17; cell wall smooth; chloroplasts with 3-4 pyrenoids (Illustrations of The Japanese Fresh-water Algae, 1977).


Closterium cornu Ehrenberg var. cornu, cell body 180 μm long, 11 μm wide, L/W=16.3, chloroplasts with 4 or 5 pyrenoids in each semicell, x 400, x 640, Kaga city, Ishikawa Pref., Japan, 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
Closterium Closterium Closterium
Cell body 140 μm long, 8.5 μm wide, L/W =16.5, 3 or 4 pyrenoids in each semicell
Closterium Closterium


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