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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 Ehrenberg ?), cell body 98 μm long, 47 μm wide, L/W=2.1, isthmus 15 ? μm wide, x 640, Shibu-ike (pond), Shiga highland, Yamanouchi town, Nagano Pref., Japan, June 19, 2005 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Euastrum cuneatum Euastrum cuneatum
Cell body 99 μm long, 51 μm wide, L/W=1.9, isthmus 16 μm wide, x 640
Euastrum cuneatum
Cell body 99 μm long, μm wide, L/W=, isthmus μm wide, x 640
Euastrum cuneatum
Cell body 93 μm long, 52 μm wide, L/W=1.8, isthmus 14 μm wide, x 640
Euastrum cuneatum
Cell body 104 μm long, 55 μm wide, L/W=1.9, isthmus 16 μm wide, x 640
Euastrum cuneatum Euastrum cuneatum
Cell body 96 μm long, 55 μm wide, L/W=1.7, isthmus 16 μm wide, x 640
Euastrum cuneatum


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