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Gamophyceae: Zygnematales: Desmidiaceae

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

Euastrum 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. trigibberum W. et G.S. West ?, cell body 26 μm long, 20 μm wide, L/W=, x 640, a small pond near Yamakado marsh (Yamakado-Suigen-no-Mori), Nishi-Azai town, Shiga Pref., Japan, June 30, 2008, by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Euastrum binale Euastrum binale

Images of collecting locality: A small pond near Yamakado marsh (Yamakado-Suigen-no-Mori), Nishi-Azai town, Shiga Pref., Japan, June 30, 2008, by Y. Tsukii


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