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Gamophyceae: Zygnematales: Desmidiaceae

Euastrum cuneatum
Jenner

Euastrum Subgenus: Entomum (Apical area deeply indented or notched)
Section: Incisa (Cell surface smooth; apical area without spiny projections)

Species: Cell body medium in size, 90-101 μm long, 48-50 μm wide, L/W=2, isthmus 14-17 μm wide; semicells pyramid-shaped with narrowly flattened apex; lateral margins nearly straight or somewhat wavy; cell wall dotted or with many small pores, bulging inconspicuous (Illustrations of The Japanese Fresh-water Algae, 1977).
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Euastrum cuneatum Jenner (or E. ansatum ?), cell body 117 μm long, 59 μm wide, L/W=, isthmus 15 μm wide, x 640, No.5, Shijuhachi-ike (pond), Shiga highland, Yamanouchi town, Nagano Pref., Japan, October 9, 2006 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Euastrum

Images of collecting locality: No.5, Shijuhachi-ike (pond), Shiga highland, Yamanouchi town, Nagano Pref., Japan, October 9, 2006 by Y. Tsukii


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