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Ocean Ecosystems/ESRIG, University of Groningen and Arctic Centre, University of Groningen and the RaTS program, British Antarctic Survey.

Ocean Ecosystems/ESRIG, University of Groningen and Arctic Centre, University of Groningen and the RaTS program, British Antarctic Survey.

Authority

(Grunow) Grunow (1884: 6, 58)

Class

Diatomophyceae

Order

Centrales

Family

Triceratiaceae

Synonyms

Biddulphia weissflogii “var.?”, Schmidt (1889), in Schmidt et al. (1874–1959, pl. 141, figs 24–26)
Biddulphia striata G.Karst. (Karsten, 1905: 122, pl. 17, figs 2, 3b)
Zygoceros caballeroi Azpeitia (Azpeitia Moros, 1911: 224, pl. 2, fig. 4)
See Hoban et al. (1980) for a discussion of the confused nomenclatural history of O. weissflogii.

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Basionym

Biddulphia weissflogii Grunow, in van Heurck (1882: pl. 100, figs 1, 2), Janisch (1888: pl. 21, figs 10–16, as Biddulphia weissflogii Janisch)

Additional References

Hendey (1937: 278, pl. 10, figs 4, 5, as Biddulphia striata), Okuno (1953: 17), Manguin (1954: 15), Hustedt (1958: 137), Hoban et al. (1980: 594, figs 15–29), Priddle & Fryxell (1985: 70, figs A–H), Moisan & Fryxell (1993: 293)

Description

Cells solitary or forming short chains, weakly silicified, rectangular in girdle view, with slightly raised corners; pervalvar axis 60–130 µm. Valves elliptical in valve view; apical axis 28–84 µm; transapical axis 22–42 µm, with 2 or 4 long curved labiate processes, the external sections of which are hollow (Fig. b), the internal parts small and simple (Fig. c); valves loculate with internal foramina and external cribra; bipolar ocellate elevations small, mammiform. Chloroplasts numerous, stellate. Resting spores heavily silicified; valves with reduced bipolar ocellate elevations and only 2 offset labiate processes that are not hollow in the external sections (Fig. e).

Distribution

Weddell Sea (Buck & Garrison, 1983; Moisan & Fryxell, 1993); Wilkes Land, Antarctica (Bunt & Wood, 1963); Heard I. (Manguin, 1954); South Atlantic (Hustedt, 1958); South Georgia, Bransfield Strait (Hendey, 1937; Kopczyńska & Ligowski, 1985); Lützow-Holm Bay (Tanimura et al., 1990); Scotia Sea (Garrison et al., 1987); Kerguelen Basin (Mangin, 1915).

Comments

N/A

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