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Cyanophyceae: Nostocales: Rivulariaceae

 Rivularia globiceps
G.S. West var. globiceps

Rivularia globiceps Family: Trichome (filamentous structure) tapered from base to tail
Genus (Rivularia [J. Agardh 1824] Bornet et Flahault 1886): Heterocysts present; one trichome within a sheath; coenobium absent (Illustrations of The Japanese Fresh-water Algae, 1977).

Rivularia globiceps G.S. West var. globiceps, cell body μm long, μm wide, x 100, x 200, x 400, x 640, rice field, Mizuhata, Nishi-ku, Saitama city, Saitama Pref., Japan, July 25, 2004 by Y. Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400 : scale 31 μm scale 63 μm scale 94 μm; x 640
Rivularia globiceps Rivularia globiceps Rivularia globiceps
Rivularia globiceps Rivularia globiceps Rivularia globiceps Rivularia globiceps Rivularia globiceps

Homoeothrix: Heterocysts absent (Illustrations of The Japanese Fresh-water Algae, 1977).

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