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Gamophyceae: Zygnematales: Desmidiaceae or Closteriaceae

Closterium pronum

Closterium pronum 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
Species: Cell body elongated spindle-shaped, μm long, μm wide, L/W= ;


Closterium pronum , cell body 227 μm long, 6 μm wide, L/W=37.8, x 400, x 640, No.3, Yahei-daira-shitsugen (Yahei-daira marsh), North of Higashidaiten, Azuma mountains, Yonezawa city, Yamagata Pref., Japan, July 1, 2007 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Closterium pronum Closterium pronum Closterium pronum

Images of collecting locality: No.3, Yahei-daira-shitsugen (Yahei-daira marsh), North of Higashidaiten, Azuma mountains, Yonezawa city, Yamagata Pref., Japan, July 1, 2007 by Y. Tsukii


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