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Authority

Schütt (1895: 48, fig. 27)

Class

Diatomophyceae

Order

Centrales

Family

Chaetoceraceae

Synonyms

N/A

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Basionym

N/A

Additional References

VanLandingham (1968: 739), Priddle & Fryxell (1985: 50, figs A–H), Hasle & Syvertsen (1997: 213, pl. 45, tab. 52)

Description

Cells small, in straight or curved chains, twisted about the chain axis, isovalvate, rectangular in girdle view; pervalvar axis 8–15 µm. Valves elliptical; apical axis 6–25 µm. Apertures between cells narrow, elliptical, with a central constriction. Setae long, thin, arising from narrow ends of valve margins, diverging and lying perpendicular to the cell chain; intercalary setae strongly spinose; terminal setae smooth. Resting spores in pairs, the parent cells with fused setae and no aperture.

Distribution

Southern Ocean, south of Australia; Southern Ocean (Priddle & Fryxell, 1985); cosmopolitan (Hasle & Syvertsen, 1997).

Comments

N/A

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