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Dinophyceae: Peridiniales: Ceratiaceae
Dinoflagellida: Diniferina: Peridiniidae

Ceratium hirundinella
(O.F. Müller) Schrank 1882 (Mizuno & Takahashi eds. 2000)
(O.F. Müller) Dujardin 1841 (John et al. eds. 2002)

Ceratium Genus: Body flattened; with one anterior and 1-4 posterior horn-like processes; chloroplasts yellow, brown, or greenish; numerous species (Kudo, 1960).


Ceratium hirundinella (O.F. Müller) Schrank 1882, cell body about 240 μm long, 60 μm wide, x 640, near Momijidani Ootsuribashi (hanging bridge), Shiobara town, Tochigi Pref., Japan, August 22, 2004, by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Ceratium Ceratium

Ceratium hirundinella (O. F. Müller) Schrank: 95-100 μm; epicone is one long horn; hypocone as two or three horns; many varieties (How to know the protozoa, 1979). 200 μm long, 60 μm wide (Illustrations of The Japanese Fresh-water Algae, 1977).

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