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Chrysophyceae: Ochromonadales: Ochromonadaceae

 Ochromonas variabilis
H. Meyer

Ochromonas Genus: Solitary or colonial; body surface delicate; one to two chloroplasts; usually with a stigma; fresh water (Kudo, 1966). One to several chloroplasts; pyrenoid and/or eyespot (stigma) in some; cells naked, globular, ellipsoidal or pyriform (Illustrated Guide, 1985).
Species:

Ochromonas sp., a contamination of a culture of P. caudatum (strain Nas-15), cell body nearly spherical, 7-8 μm in diam., x 640, Sugadaira, Nagano Pref., Japan, July 2001 collected by N. Kinoshita, photo by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Ochromonas Ochromonas Ochromonas Ochromonas Ochromonas

O. mutabilis Klebs: Ovoid to spherical; plastic; 15-30 μm long, 8-22 μm wide (Kudo, 1966). Resembles Chromulina; 1-2 chloroplasts; usually a stigma (How to know the protozoa, 1979).
O. granularis Doflein: 5-12 μm long; no stigma (Kudo, 1966).

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