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Gamophyceae: Zygnematales: Desmidiaceae

Euastrum binale
(Greville) Ralfs

Subgenus: Atomum (Apical area slightly depressed)
Section: Simplicia (Cell body small; cell surface smooth)

Species: Cell body small, 15-30 μm long, 12.5-21 μm wide, constriction 3-8 μm wide, L/W=1.3; semicells pyramidal in shape, basal lobes rounded, anterior margin broad, slightly depressed at the center, both corners slightly pointed; lateral view of the semicells ovoidal, apical view ellipsoidal, both sides convex (Illustrations of The Japanese Fresh-water Algae, 1977).
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