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Xanthophyceae: Mischococcales: Ophiocytiaceae

 Ophiocytium capitatum
Wolle var. capitatum

Ophiocytium capitatum 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: Cell body 5-7 (-10) μm wide (Süßwasserflora von Mitteleuropa 3, Xanthophyceae 1, 1978). Cell body with short spiny projections at both ends, 5-10 μm in diam., 50-300 μm long (Illustrations of Japanese fresh-water algae, 1977).

Ophiocytium capitatum Wolle var. capitatum, cell body 210 μm long (including terminal spiny projections, 13, 10 μm long), 7 μm wide, x 640, Hasu-ike (pond), Shiga highland, Yamanouchi town, Nagano Pref., Japan, June 19, 2005 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Ophiocytium capitatum Ophiocytium capitatum
cell body 215 μm long (including terminal spiny projections, 28, 30 μm long), 5.5 μm wide, Ophiocytium capitatum Ophiocytium capitatum

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