Genus: Colonial; without lorica; individuals clustered at the end of a stalk;
stalks yellow or brownish and usually bent (Kudo, 1966).
Species:
Anthophysis sp.,
cell body μm long, μm wide,
x 640, rice field near Hanekura bridge, Muneoka, Shiki city, Saitama Pref., Japan, May 30, 2004 by Y. Tsukii
31 μm
63 μm
94 μm; x 640