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Gamophyceae: Zygnematales: Desmidiaceae or Closteriaceae

 Closterium baillyanum
Brébisson

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Closterium baillyanum Species: Cell body large, slightly curved, gradually tapered toward ends, both ends broadly truncated with rounded corners, 250-(430-736) μm long, 30-(42-48)-58 μm wide, L/W=10-11; cell wall dotted, yellowish in color, especially at both ends; 5-7 pyrenoids in each semicell (Illustrations of The Japanese Fresh-water Algae, 1977).

Closterium baillyanum Brébisson var. baillyanum, cell body 372 μm long, 50 μm wide, L/W=7.4, x 200, x 400, x 640, Yukawa-numa (pond), Nishiwaga-machi (town), Iwate Pref., Japan, July 28, 2007 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 baillyanum Closterium baillyanum Closterium baillyanum Closterium baillyanum Closterium baillyanum
Cell body 366 μm long, 48 μm wide, L/W=7.6, x 200, x 400, x 640
Closterium baillyanum Closterium baillyanum Closterium baillyanum Closterium baillyanum Closterium baillyanum

Images of collecting locality: Yukawa-numa (pond), Nishiwaga-machi (town), Iwate Pref., Japan, July 28, 2007 by Y. Tsukii

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