Gamophyceae:
Zygnematales: Desmidiaceae
Euastrum gnathophorum
W. et G.S. West
Subgenus: Entomum (Apical area deeply indented or notched)
Section: Incisa (Cell surface smooth; apical area without spiny projections)
Species: Cell body 47-73 μm long, 34-36 μm wide, isthmus 11-14 μm wide
(Illustrations of The Japanese Fresh-water Algae, 1977).
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Euastrum gnathophorum,
cell body μm long, μm wide, isthmus μm wide,
x 640, Omine-numa (pond/marsh), Tsukiyono town, Gunma Pref., Japan, September 2003 by Y. Tsukii
31 μm
63 μm
94 μm; x 640
Euastrum gnathophorum Lenormand var. gnathophorum:
Cell body 60-74 μm long, 34-46 μm wide, isthmus 8-15 μm wide,
(Illustrations of the Fresh-water Algae, 1977).
Euastrum gnathophorum var. germanicum (Raciborski) Lütkemüller:
Cell body 59-78 μm long, 36.5-47.6 μm wide, isthmus 7-12.5 μm wide,
L/W=1.5-1.75
(Illustrations of the Fresh-water Algae, 1977).
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