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Xanthophyceae: Mischococcales: Ophiocytiaceae

 Ophiocytium maius
Naegeli

Ophiocytium maius Genus: Unicellular; planktonic; cell body elongated cylindroid, curved or twisted; both ends rounded, with spiny projections; cell wall not separated into two parts (compare to Centritractus); several chloroplasts plate-like, without pyrenoids (Guide book to the "Photomicrographs of the Freshwater Algae", 1998).
Species:

Ophiocytium maius Naegeli, cell body 90 μm long, 5.5 μm wide, L/W=, spiny projection 3 μm long, x 640, Dojo-ike (pond), Norikura highland, Azumi, Matsumoto city (formerly Azumi village), Nagano Pref., Japan, June 8, 2006 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Ophiocytium maius Ophiocytium maius

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