Genus: Body round to polygonal; cingulum median, deep; thecal plates 5-6 in cingulum;
some with apical and antapical horn (Illustrated Guide, 1985).
Epicone (or epitheca) consists of 11-14 thecal plates; hypocone (or hypotheca) of
7-8 thecal plates
(Illustrations of The Japanese Fresh-water Algae, 1977).
Species: |
31 μm
63 μm
94 μm; x 640
Peridinium bipes,
theca 57 μm long, 57 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
