Family: Trichome (filamentous structure) lacks heterocysts; with equal diameter throughout whole length; no hair-like structure; no branching.
Genus: A single trichome within a mucilaginous sheath (Illustrations of The Japanese Fresh-water Algae, 1977).
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Phormidium sp. ?
12 μm diam.
Japan, 199?
Phormidium sp. ?
or Oscillatoria ?
12 μm diam.
Japan, 199?
Phormidium sp. ?
or O. tenuis ?
11 μm diam.
Japan, 199?
Phormidium sp. ?
or Oscillatoria ?
μm
Japan, 199?
Phormidium sp. ?
2 x 7.5 μm
Todoroki g.l.
Kawasaki
Kanawaga, 2004
Phormidium sp. ?
3 x 11 μm
Senuki
Nasu
Tochigi, 2004
P. favosum
2-3.5 x 8 μm
Senganpi Suigo p.
Saitama
Saitama, 2005
Phormidium sp. ?
x 4.5 μm
near railway st.
Suwa
Nagano, 2005
