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Xanthophyceae: Tribonematales:

Tribonema minus
(Wille) Hazen

Tribonema 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: Filaments with a slight constriction at cell-cell junction; cell body cylindrical, slightly swelled at the center, 10-13 μm long ,4-5 μm wide, L/W=1.5-2-(3); chloroplasts 2 or 3 in number, plate-like (Illustrations of the Japanese Freshwater Algae, 1977). Filaments 4-6 μm wide; cell body up to 2 times longer than its width (Süßwasserflora von Mitteleuropa 3, Xanthophyceae 1, 1978).


Tribonema minus (Wille) Hazen, cell body 16-18 μm long, 6 μm wide, L/W=2.7-3.0, x 400, 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
Tribonema Tribonema Tribonema


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