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Gamophyceae: Zygnematales: Desmidiaceae or Closteriaceae

Closterium setaceum
Ehrenberg ex Ralfs 1848

Closterium setaceum Species [var. setaceum]: Cell body quickly attenuated toward both ends (cf. C. ralfsii), each extended part longer than spindle-shaped part at middle (cf. C. kuetzingii), 150-(252-528)-600 μm long, 6-(8.6-17) μm wide, L/W=30-33; cell wall transparent or slightly yellowish, finely striated (Illustrations of The Japanese Fresh-water Algae, 1977).
Similar species -->> C. kuetzingii;


Closterium setaceum Ehrenberg, cell body μm long, μm wide, L/W=, x 640, Block 2-5, Kashibaru marsh, Karatsu city, Saga Pref., Japan, September 9, 2008 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 setaceum Closterium setaceum Closterium setaceum Closterium setaceum

Images of collecting locality: Block 2-5, Kashibaru marsh, Karatsu city, Saga Pref., Japan, September 9, 2008 by Y. Tsukii


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