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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 120 μm long, 110 μm wide, L/W=1.1, isthmus 24 μm wide, x 640, No.3, Tanohara marsh, Shiga highland, Yamanouchi town, Nagano Pref., Japan, June 17, 2007 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 truncata Micrasterias truncata Micrasterias truncata Micrasterias truncata

Images of collecting locality: No.3, Tanohara marsh, Shiga highland, Yamanouchi town, Nagano Pref., Japan, June 17, 2007 by Y. Tsukii

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