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Gamophyceae: Zygnematales: Desmidiaceae

Euastrum ampullaceum
Ralfs var. ampullaceum

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

Species: Cell body μm long, μm wide, L/W=, isthmus μm wide; (Illustrations of The Japanese Fresh-water Algae, 1977).


Euastrum ampullaceum Ralfs, cell body 84 μm long, 59 μm wide, L/W=1.4, isthmus 13 μm wide, x 640, Iroha-numa (marsh), Zao mountain, Yamagata city, Yamagata Pref., Japan, July 9, 2005 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Euastrum ampullaceum Euastrum ampullaceum Euastrum ampullaceum
Cell body 80 μm long, 50 μm wide, L/W=1.6, isthmus 12 μm wide, x 640
Euastrum ampullaceum Euastrum ampullaceum Euastrum ampullaceum Euastrum ampullaceum


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