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Gamophyceae: Desmidales: Desmidiaceae
(Charophyceae: Zygnematales: Desmidiaceae)

 Micrasterias thomasiana
var. notata (Nordstedt) Grönblad

Micrasterias thomasiana Genus: Cell body flat, large, variable in shape, longer than wide; strong constriction at center; each semicell with several notches; cell wall with many short spines (Illustrations of The Japanese Fresh-water Algae, 1977).
Species:

Micrasterias thomasiana var. notata (Nordstedt) Grönblad, cell body 225 μm long, 205 μm wide, L/W=, isthmus 45 μm wide (?), x 400, x 640, No.5, Tashirodaira marsh, Hakkoda mountain, Aomori city, Aomori Pref., Japan, September 13, 2006 by Y. Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400 : scale 31 μm scale 63 μm scale 94 μm; x 640
Micrasterias thomasiana Micrasterias thomasiana Micrasterias thomasiana

Images of collecting locality: No.5, Tashirodaira marsh, Hakkoda mountain, Aomori city, Aomori Pref., Japan, September 13, 2006 by Y. Tsukii

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