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Authority

G.Karst. (Karsten, 1905: 116, pl. 15, fig. 1)

Class

Diatomophyceae

Order

Centrales

Family

Chaetoceraceae

Synonyms

N/A

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Basionym

N/A

Additional References

Castracane (1886: 80, text fig., as “Chaetoceros sp. nov.?”), Manguin (1960: 278, pl. 8, figs 92, 93; pl. 27, fig. 327), Priddle & Fryxell (1985: 26), Hasle & Syvertsen (1997: 199, pl. 39)

Description

Cells in straight chains, isovalvate, rectangular in girdle view; pervalvar axis 11–17 µm. Valves elliptical, 10.5–23 µm diameter, with a central protuberance. Apertures between cells narrow. Setae long, thin, finely spinose for much of their length, arising from the valve surface slightly inside the margin, those of adjacent cells at first fused, then lying perpendicular to the chain axis. Chloroplasts small, spherical.

Distribution

Coastal waters off Davis Station, East Antarctica; Terre Adélie (Manguin, 1960); Weddell Sea (Garrison & Buck, 1989b); Bransfield Strait (Priddle, 1985); Southern Ocean (Priddle & Fryxell, 1985); Weddell-Scotia Sea (Garrison et al., 1987); Ross Sea (Watanabe, 1982).

Comments

N/A

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