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 3-4 μm wide; cell body up to 3 times longer than its width; usually with 2 parietal disc or band-shaped chloroplasts (Süßwasserflora von Mitteleuropa 3, Xanthophyceae 1, 1978).

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T. elegans ? x 4-5 μm φ Mizuko Fujimi Saitama, 2003	T. elegans ? 16-27 x 4 μm φ Ichinose-enchi Norikura highland Nagano, 2005	T. elegans ? 27-31 x 3.5 μm φ Kiyasse-Hanyu Hanyu Saitama, 2006
T. elegans ? x 4 μm φ Omoi river Oyama Tochigi, 2004	T. elegans ? x 4.5 μm φ Sakitama-kofun p. Gyoda Saitama, 2004	T. elegans 12-20 x 4.5 μm near Ichinose-enchi Norikura highland Nagano, 2005	T. elegans 15-20 x 4.5 μm Ichinokawa Yoshimi Saitama, 2006

Similar genera -->> Microspora;

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