Gamophyceae:
Zygnematales: Desmidiaceae
Euastrum ampullaceum
Ralfs var. ampullaceum
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).
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Euastrum ampullaceum Ralfs,
cell body 85 μm long, 50 μm wide, L/W=1.7, isthmus 10 μm wide,
x 640, No. 9-1, Mida-ga-hara (bog/marsh), Gassan (mountain), Tsuruoka city (formerly Haguro town) & Shonai town (formerly Tachikawa town), Yamagata Pref., Japan, August 3, 2006 by Y. Tsukii
31 μm
63 μm
94 μm; x 640
Semicell 42 μm long, 55 μm wide, L/W=, isthmus 11 μm wide, x 640
Images of collecting locality:
No. 9, Mida-ga-hara (bog/marsh), Gassan (mountain), Tsuruoka city (formerly Haguro town) & Shonai town (formerly Tachikawa town), Yamagata Pref., Japan, August 3, 2006 by Y. Tsukii
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