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

 Micrasterias truncata
(Corda) Brébisson var. truncata

Micrasterias truncata 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 truncata (Corda) Brébisson var. truncata, cell body 116 μm long, 98 μm wide, L/W=1.2, isthmus 21 μm wide, x 640, Kenashitai (marsh), Hakkoda mountain, Aomori city, Aomori Pref., Japan, July 17, 2005 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Micrasterias Micrasterias Micrasterias

Cell body 120 μm long, 110 μm wide, L/W=1.1, isthmus 23? μm wide, x 640
Micrasterias Micrasterias Micrasterias

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