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Ulvophyceae: Ulotrichales: Ulotrichaceae

Chodat et Topali

Order: Filamentous algae without branching; cell body mostly cylindrical.
Family: Chloroplasts plate-like or ribbon-like; sexual reproduction by isogamy.

Genus: Filamentous colonies covered with mucilagenous sheath; 2, 3 or 4 daughter cells linearly connected by thin filament derived from their mother cell wall; cell body spherical; a single chloroplast parietal with a pyrenoid (Yamagishi, Introduction to the Freshwater Algae, 1999).
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Interfilum paradoxum
P. paradoxum
x 3 μm
Kamihira Park
Saitama, 2003

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