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Cryptophyceae: Cryptomonadales: Cryptomonadaceae

Chroomonas sp.
Hansgirg 1885

Chroomonas Genus: Elliptical body with a firm pellicle; dorsal side convex, ventral side slightly flat; "cytopharynx" with granules; two lateral chromatophores (chloroplasts) vary in color from green to blue-green, brown or rarely red; 1-3 contractile vacuoles anterior (Kudo, 1966). Cell body cylindrical or elongated ovoid; cytopharynx inconspicuous, two rows of ejectisomes (formerly trichocysts) (Yamagishi, 1999).
Similar genus -->> Cryptomonas; Chilomonas;

Chroomonas or Cryptomonas ?, 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

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