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Cyanophyceae: Nostocales: Nostocaceae

 Anabaenopsis sp.
(Woloszynska) Miller 1923 (Bergey's Manual 2nd. 2001)

Family: Trichome (filamentous structure) with heterocysts; with equal diameter throughout hole length; no branching; heterocysts intervening or at base.
Genus: Mucous sheath, nearly invisible; heterocysts at base never become a large akinete (Illustrations of The Japanese Fresh-water Algae, 1977).

Anabaenopsis sp., cell body μm long, μm wide, x 640, Daidarabotchi-ike (or Daizahoshi-ike), Iizuna-kogen (Iizuna Highland), Nagano city, Nagano Pref., September 2003, by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Anabaenopsis Anabaenopsis Anabaenopsis raciborskii Anabaenopsis raciborskii

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