Family: Unicells; planktonic; cell body spherical, ellipsoidal, ovoid, fusiform or polygonal in shape; cell wall smooth in most species; chloroplasts without pyrenoids; leucosin granules present (Illustrations of The Japanese Fresh-water Algae, 1977).
Genus: (Illustrations of The Japanese Fresh-water Algae, 1977).
Google Image Search
Similar genus -->> Tetraedriella; Tetraedron;
T. torsum
39 μm
Shikinawa-ike
Fukuoka, 2001
T. torsum ?
30 μm
Sayama park
Higashi-Murayama
Tokyo, 2006
T. torsum
46 μm
Ukima Park
Kita-ku
Tokyo, 2006
Tetraplektron sp.
μm
Higusa-numa
Hikari
Chiba, 2003