Genus:
Epicone (or epitheca) consists of 10-16 thecal plates;
hypocone (or hypotheca) of 6-7 thecal plates
(Illustrations of The Japanese Fresh-water Algae, 1977).
Species:
Glenodinium sp. ?,
theca 51 μm long, 55 μm wide,
x 640, Okubo Ryoke (picnic-no-mori), Akigase park, Saitama city, Saitama Pref., Japan, February 27, 2005 by Y. Tsukii
31 μm
63 μm
94 μm; x 640