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

Gonatozygon kinahanii
G. kinahanii (W. Archer) Rabenhorst (Coesel & Meesters 2007; John et al. 2002)
G. kinahani (Archer) Hasting (Illustrations of The Japanese Fresh-water Algae, 1977)

Gonatozygon 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 162-(185-230)-236 μm long, 11-(12)-14 μm wide, L/W = 14-25 (or 40), cell wall smooth, both ends not swelled, 2 chloroplasts with 4-10 pyrenoids in each (Illustrations of The Japanese Fresh-water Algae, 1977).
Similar species -- >> Mougeotia;

Gonatozygon kinahani (Archer) Hasting ?, cell body 265 μm long, 14 μm wide, L/W=18.9, x 640, Omine-numa (pond/marsh), Omine, Minakami town (formerly Tsukiyono town), Gunma Pref., Japan, May 25, 2006 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 kinahani Gonatozygon kinahani Gonatozygon kinahani
Cell body 305 μm long, 13 μm wide, x 640
Gonatozygon kinahani Gonatozygon kinahani Gonatozygon kinahani

Images of collecting locality: No.5/6, Omine-numa (pond/marsh), Omine, Minakami town (formerly Tsukiyono town), Gunma Pref., Japan, May 25, 2006 by Y. Tsukii

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