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Chlorophyceae: Zygnematales: Mesotaeniaceae or Gonatozygaceae
(Gamophyceae: Zygnematales: Desmidiaceae)

Gonatozygon monotaenium
de Bary

Gonatozygon monotaenium Genus: Two chloroplasts plate-like or slightly spiralled; a nucleus centrally located between the chloroplasts; mostly unicells, filaments rare (Illustrations of The Japanese Fresh-water Algae, 1977).
Species: Cell body cylindrical (74-145)-284 μm long, 7.5-11.5 μm wide, L/W = 10-25, cell wall granulated, both ends slightly swelled, 2 chloroplasts with 4-10 pyrenoids in each (Illustrations of The Japanese Fresh-water Algae, 1977).
Similar species -- >> Mougeotia;

Gonatozygon monotaenium de Bary (or Mougeotia ?), cell body 145 μm long, 11 μm wide, x 640, Nanbata-shinden, Fujimi city, Saitama Pref., Japan, July 4, 2004 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
Gonatozygon Gonatozygon Gonatozygon

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