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

 Micrasterias papillifera
Brébisson in Ralfs var. papillifera

Micrasterias papillifera 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 papillifera Brébisson in Ralfs var. papillifera, cell body 130 μm long, 114 μm wide, L/W=1.1, isthmus 15 μm wide, x 640, Aka-ike (pond), Madarao highland (Niigata & Nagano Pref.), Myoko city (formerly Myoko village), Niigata Pref., Japan, June 17, 2006 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Micrasterias Micrasterias Micrasterias Micrasterias Micrasterias

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