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

 Micrasterias pinnatifida
(Kützing) Ralfs 1848

Micrasterias pinnatifida 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 77 μm long, 73 μm wide (Illustrations of The Japanese Fresh-water Algae, 1977).

Micrasterias pinnatifida (Kützing) Ralfs, cell body 63 μm long, 67 μm wide, L/W=0.9, isthmus 10 μm wide, x 640, No.5, Kashibaru marsh, Karatsu city, Saga Pref., Japan, November 2006 by Y. Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400
Micrasterias pinnatifida Micrasterias pinnatifida
Cell body 65 μm long, μm wide, L/W=, isthmus μm wide, x 640
Micrasterias pinnatifida Micrasterias pinnatifida
Cell body 65 μm long, 65 μm wide, L/W=1.0, isthmus 10 μm wide, x 640
Micrasterias pinnatifida Micrasterias pinnatifida
Cell body 61 μm long, 65 μm wide, L/W=, isthmus 11 μm wide, x 640
Micrasterias pinnatifida

Images of collecting locality: No.5, Kashibaru marsh, Karatsu city, Saga Pref., Japan, November 22, 2006 by Y. Tsukii

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