Genus: Cell body elongate, cylindrical or spindle-shaped, apex dorso-ventrally compressed with a deep incision; centrally constricted to form 2 semicells; cell wall dotted or covered with small pores; chloroplasts consisting of axis and lateral laminae, pyrenoids arranging linearly along the axis; zygotes spherical, smooth or rectangular with rounded corners (Illustrations of The Japanese Fresh-water Algae, 1977).
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T. granulatus
17 samples
110-180 x 25-31 μ
2004-2008
T. brebissonii
15 samples
66-166 x 17-27 μ
2004-2008
T. laevis
17 samples
50-78 x 17-25 μ
2005-2008
