Order: Cell body without theca
(Illustrations of The Japanese Fresh-water Algae, 1977).
Family:
Genus:
Gyrodinium (or Katodinium vorticella ?),
cell body 48 μm long, 40 μm wide, L/W=,
x 640, a small pond at Kowashimizu, Suwa city, Nagano Pref., Japan, May 21, 2005 by Y. Tsukii 31 μm
63 μm
94 μm; x 640
Order: Cell body without theca
(Illustrations of The Japanese Fresh-water Algae, 1977).
31 μm
