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 13-16 μm long, 8 μm wide, L/W=,
x 640, Numa-no-hara marsh (Genseikaen), Madarao highland (Niigata & Nagano Pref.), Myoko village, Niigata Pref., Japan, May 15, 2005 by Y. Tsukii
31 μm
63 μm
94 μm; x 640