Genus: Trichome without mucous sheath; straight, long, consisting of numerous cells
(Illustrations of The Japanese Fresh-water Algae, 1977).
Species:
Oscillatoria sp. or Lyngbya confervoides Agardh ?,
cell body 1.7 μm long, 9.5 μm wide, L/W=0.18,
x 640, Riverside green land (near Tone river), Sawara city, Chiba Pref., Japan, October 11, 2004 by Y. Tsukii
31 μm
63 μm
94 μm; x 640