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Gamophyceae: Zygnematales: Desmidiaceae

Euastrum binale
var. sectum (W.B. Turner) Willi Krieger

Euastrum binale 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).


Euastrum binale var. sectum Turner or E. denticulatum ?, cell body 20 μm long, 15 μm wide, L/W=1.3, isthmus 5 μm wide, x 640, a small pond near Yamaguchi university, Yamaguchi city, Yamaguchi Pref., November 21, 2004, by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Euastrum Euastrum Euastrum Euastrum Euastrum


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