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Authority

Pennick & K.J.Clarke (1972: 45, figs 1–13)

Class

Chrysophyceae

Order

Ochromonadales

Family

Paraphysomonadaceae

Additional References

Takahashi (1987: 163, fig. 12), Vørs (1992: 65, fig. 30e), Ikävalko & Thomsen (1996: 152, figs 3, 4)

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Basionym

N/A

Synonyms

N/A

Description

Cells spherical, 2.4–3.2 µm diameter, biflagellate. Flagella unequal; long flagellum 6–7.5 µm long, covered with mastigonemes; short flagellum 2.4–3.0 µm long, smooth. Cell body covered with plate scales and crown scales. Plate scales elliptical, 0.7–0.82 µm long, 0.55–0.63 µm wide, mesh-like, with fine perforations, without a central spine or thickened rim. Crown scales circular, with a fenestrated crown-like superstructure supported by 4 struts on a simple basal ring.

Distribution

Southern Ocean, south of Australia; fast-ice and seawater around East Ongul I., East Antarctica (Takahashi, 1987); New Zealand (Moestrup, 1979); a widespread species (Preisig & Hibberd, 1982a, b); Baltic sea-ice (Ikävalko & Thomsen, 1996).

Comments

N/A

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