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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 kinahani 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).

Gonatozygon kinahani, (Archer) Hasting, a clone (Sak 6B) axenically cultured with Hyponex and KCM medium, colonies consisting with many daughter cells attached in tandem, axenically cultured with Hyponex and KCM medium in a plastic petri dish, cell 196 μm long long, 12 μm long wide, L/W = 16.3, cell wall smooth, both ends not swelled, 2 chloroplasts with 5 pyrenoids in each, x 100, x 200, x 400, x 640, Kurome River, Asaka City, Saitama Pref., Japan, September 2000, 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 Gonatozygon Gonatozygon Gonatozygon
Gonatozygon Gonatozygon Gonatozygon Gonatozygon
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Terminal of each colony covered with adhesive materials by which they adhere to other substance (e.g. bottom of a plastic dish)
Gonatozygon Gonatozygon

Gonyostomum sp., dead cells in axenic culture (HypoNex & KCM), x 400, x 640, 2000 by Y. Tsukii

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