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Gamophyceae: Zygnematales: Desmidiaceae

 Euastrum sinuosum
Lenormand var. sinuosum

Euastrum sinuosum Subgenus: Entomum (Apical area deeply indented or notched)
Section: Incisa (Cell surface smooth; apical area without spiny projections)
Species: Cell body 60-74 μm long, 34-46 μm wide, isthmus 8-15 μm wide, (Illustrations of the Fresh-water Algae, 1977).

Euastrum sinuosum Lenormand var. sinuosum (or var. gangense (Turner) Krieger ?), cell body 67 μm long, 43 μm wide, L/W=1.6, isthmus 11 μm wide, x 640, No. 4-1, 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
scale 31 μm scale 63 μm scale 94 μm; x 640
Euastrum Euastrum
Cell body 67 μm long, 43 μm wide, L/W=1.6, isthmus 11 μm wide, x 640
Euastrum Euastrum

Images of collecting locality: No. 4, 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

Euastrum sinuosum Lenormand var. sinuosum: Cell body 60-74 μm long, 34-46 μm wide, isthmus 8-15 μm wide, (Illustrations of the Fresh-water Algae, 1977).

Euastrum sinuosum var. germanicum (Raciborski) Lütkemüller: Cell body 59-78 μm long, 36.5-47.6 μm wide, isthmus 7-12.5 μm wide, L/W=1.5-1.75 (Illustrations of the Fresh-water Algae, 1977).

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