Species: Trichome straght or wavy, not constricted at cell-cell junctions, 4-8 μm long,
3.5-4 (or 6) μm wide; granules absent along septum
(Illustrations of The Japanese Fresh-water Algae, 1977).
Oscillatoria chlorina Kützing (or O. lemmermannii ?),
cell body μm long, 3 μm wide,
x 640, drainage ditch close to Shide-numa (pond), near Watarase-yusuichi (Watarase wetland), Kita-kawabe town, Saitama Pref., April 10, 2005 by Y. Tsukii
31 μm
63 μm
94 μm; x 640