Genus: A single trichome within a rigid sheath; sheath clear or yellowish; filaments planktonic or
agglutinated (Illustrations of The Japanese Fresh-water Algae, 1977).
Species:
Oscillatoria sp. (or Phormidium retzii (Agardh) Gomont ?),
cell body 6-8 μm long, 8.5 μm wide, septum constricted,
x 640, water treatment center, Ishii, Sakado city, Saitama Pref., Japan, December 19, 2004 by Y. Tsukii 31 μm
63 μm
94 μm; x 640
Genus: A single trichome within a rigid sheath; sheath clear or yellowish; filaments planktonic or
agglutinated (Illustrations of The Japanese Fresh-water Algae, 1977).
31 μm
