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Xanthophyceae: Tribonematales:

Tribonema monochloron
Pascher et Geitler

Genus: Filament without branching; cell body cylindrical; each cell wall consists of two parts with "H" structure overlapping at the midregion; chloroplasts many, disc-shaped, without pyrenoids (Guide book to the "Photomicrographs of the Freshwater Algae", 1998).
Species: Filament 2.5-3 μm wide (Süßwasserflora von Mitteleuropa 3, Xanthophyceae 1, 1978).

Tribonema monochloron Pascher et Geitler ?, cell body μm long, 2.5-3 μm wide, x 640, Lake Biwa, Maihara town, Shiga Pref., Japan, June 2003, by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Tribonema Tribonema Tribonema

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