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Chlorophyceae: Chaetophorales: Chaetophoraceae

 Stigeoclonium aestivale
(Hazen) Collins

Stigeoclonium Genus: Filamentous algae, axis-branch differentiation incomplete; terminal cells tapered to form spiny projections; branches do not form in tuft (Illustrations of The Japanese Fresh-water Algae, 1977).
Species:

Stigeoclonium aestivale (Hazen) Collins ?, cell body μm long, μm wide, x 640, Itakura Central Park, Itakura, Itakura city, Gunma Pref., Japan, May 2003 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
Stigeoclonium Stigeoclonium Stigeoclonium Stigeoclonium Stigeoclonium
Stigeoclonium Stigeoclonium Stigeoclonium Stigeoclonium Stigeoclonium

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