Genus: Cell body ellipsoidal or short cylindrical; chloroplasts plate-like.
Species:
Cell body cylindrical, 22-38 μm long, 11-20 μm wide, both ends rounded,
a single plate-like chloroplast present, margins dented
(Illustrations of The Japanese Fresh-water Algae, 1977) .
Mesotaenium macrococcum (Kützing) Roy et Bisset,
cell body 28.5 μm long, 14 μm wide, L/W=2.0,
x 640, a small marsh pond near memorial pole of Saito Mokichi (close to Iroha-numa), Zao mountain, Yamagata city, Yamagata Pref., Japan, August 2, 2006 by Y. Tsukii
31 μm
63 μm
94 μm; x 640
Images of collecting locality:
a small marsh pond near memorial pole of Saito Mokichi (close to Iroha-numa), Zao mountain, Yamagata city, Yamagata Pref., Japan, August 2, 2006 by Y. Tsukii