Genus:
Filamentous algae without branching; a single plate-like chloroplast in each cell
(Illustrations of The Japanese Fresh-water Algae, 1977).
Species:
vegetative cells 40-180 μm long,
20-34 μm diam.,
4-10 pyrenoids (Illustrations of The Japanese Fresh-water Algae, 1977).
Mougeotia scalaris Hassall,
cell body 97-125 μm long, 23 μm wide,
x 400, x 640, a small pond near Shin-Akitsu railway station, Higashi-Murayama city, Tokyo, Japan, February 11, 2004 by Y. Tsukii 31 μm
63 μm
94 μm; x 640
Zygnema excompressum Transeau:
vegetative cells 32-80 μm long,
23-26 μm diam.,
2chloroplasts in each cell