Family: Trichome (filamentous structure) tapered from base to tail
Genus: Heterocysts present; one trichome within a sheath; coenobium absent
(Illustrations of The Japanese Fresh-water Algae, 1977).
Homoeothrix sp. ?,
cell body μm long, μm wide,
x 640, Toneri Park, Adachi-ku, Tokyo, Japan, December 2001 by Y. Tsukii 31 μm
63 μm
94 μm; x 640
Homoeothrix: Heterocysts absent
(Illustrations of The Japanese Fresh-water Algae, 1977).