Tetraedron caudatum
(Corda) Hansgirg var. incisum Lagerheim
Genus: Cell body short, radiate in shape; apical view of the cell, triangular, polygonal,
ellipsoidal or spindle-shaped; zygospores formed outside of mother cells
(Illustrations of The Japanese Fresh-water Algae, 1977).
Species [ var. incisum ]:
Similar genus -->> Tetraedriella (Xanthophyceae);
Goniochloris (Xanthophyceae);
Tetraedron caudatum ? or similar species,
cell body 10-13 μm wide, spiny projections 7 μm long,
x 640, Shiba river, near Owada Park, Saitama city, Saitama Pref., Japan, April 3, 2005 by Y. Tsukii
31 μm
63 μm
94 μm; x 640