Family: Filamentous algae with or without branching; cell body large, cylindrical, multinucleated; chloroplasts reticulated; sexual reproduction by isogamy.
Genus: Large filament with branching; similar to Cladophora , dark-green ellipsoidal akinete formed interspersely (Guide book to the "Photomicrographs of the Freshwater Algae", 1998).
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Pithophora sp.
x 5 μm
New-Town Central
Chiba, 2001