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Gamophyceae: Zygnematales: Desmidiaceae or Closteriaceae

Closterium aciculare
T. West

Closterium aciculare 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: 390-(430-580)-800 μm long, 4-(5-7)-8 μm wide, L/W = 73-135; cell body very long, slightly curved, tapered at both termini; cell wall transparent, lack bands (Illustrations of The Japanese Fresh-water Algae, 1977).


Closterium aciculare T. West, cell body 520 μm long, 7 μm wide, L/W=74, x 100, x 200, x 400, x 640, Akigase Park, Saitama city, Saitama Pref., Japan, March 2002 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 aciculare Closterium aciculare Closterium aciculare Closterium aciculare Closterium aciculare Closterium aciculare

Closterium aciculare, cell body 400 μm long, 6.2 μm wide, L/W=65, x 200, x 400, x 640, Akigase Park, Saitama city, Saitama Pref., Japan, March 2002 by Y. Tsukii
Closterium aciculare Closterium aciculare Closterium aciculare Closterium aciculare

Closterium aciculare, cell body 375 μm long, 6.2 μm wide, L/W=61, x 200, x 400, x 640, Akigase Park, Saitama city, Saitama Pref., Japan, March 2002 by Y. Tsukii
Closterium aciculare Closterium aciculare Closterium aciculare Closterium aciculare Closterium aciculare Closterium aciculare


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