Order: Filamentous algae without branching; cell body mostly cylindrical.
Family: Cellwall shows H shape in transverse section;
chloroplasts reticulatedwithout pyrenoids.
Genus: Same as family.
Species:
Microspora sp. ?,
cell body μm long, μm wide,
x 640, Komado marsh (or bog), Showa village and Tajima town, Fukushima Pref., Japan, August 22, 2004, by Y. Tsukii
31 μm
63 μm
94 μm; x 640