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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 sp. (hirundinella Müller ?), cell body μm long, μm wide, at Lake Sai (left) and Lake Yamanaka (right), by N. Sugiyama
Ceratium 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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