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

Micrasterias rotata
(Greville) Ralfs

Micrasterias rotata 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: Cell body 256-288 μm long, 192-258 μm wide, constriction 31-40 μm wide (Illustrations of The Japanese Fresh-water Algae, 1977).


Micrasterias rotata (Greville) Ralfs, cell body μm long, μm wide, L/W=, isthmus μm wide, x 200, x 400, No.3, Ko-numa (pond/marsh), Minakami town (formerly Tsukiyono town), Gunma Pref., Japan, October 12, 2008 by Y. Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400
Micrasterias rotata Micrasterias rotata

Images of collecting locality: No.3, Ko-numa (pond/marsh), Minakami town (formerly Tsukiyono town), Gunma Pref., Japan, October 12, 2008 by Y. Tsukii


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