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Xanthophyceae: Mischococcales: Characiopsidaceae

 Characiopsis tuba
(Hermann in Rabenhorst) Lemmermann (Ettl 1978)

Characiopsis Genus: Unicellular, attached on a substrate at one end of the cell; cell body slightly curved, ovoidal or cylidrical in shape; 1 or two chloroplasts plate-like, without pyrenoids (Guide book to the "Photomicrographs of the Freshwater Algae", 1998).
Species: Cell body 20-45 μm long, 7-11 μm wide (Ettl, Xanthophyceae 1. Teil, Süßwasserflora von Mitteleuropa 3, 1978).
Similar genus -->> Characium; Chlorothecium;

Characiopsis tuba (Hermann in Rabenhorst) Lemmermann (or C. pyriformis (A. Braun) Borzi ?), cell body 18 μm long, 5.5 μm wide, L/W=3.3, stalk 17 μm long, x 640, Onnenai, Kushiro marsh, Kushiro city, Hokkaido, Japan, October 16, 2005 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Characiopsis
Cell body 25 μm long, 6 μm wide, L/W=4.2, stalk 15 μm long, x 640
Characiopsis Characiopsis
Cell body 23 μm long, 9 μm wide, L/W=2.6, stalk 10 μm long, x 640, Onnenai, Kushiro marsh, Kushiro city, Hokkaido, Japan, October 16, 2005 by Y. Tsukii
Characiopsis Characiopsis
Cell body 26 μm long, 10 μm wide, L/W=10, stalk 8 μm long, x 640
Characiopsis Characiopsis

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