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Authority

(van Heurck) Paddock (1988: 79, pl. 28)

Class

Diatomophyceae

Order

Pennales

Family

Plagiotropidaceae

Synonyms

Tropidoneis belgicae (van Heurck) Heiden, in Heiden & Kolbe (1928: 655, tab. 4, figs 98, 99)

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Basionym

Amphiprora belgicae van Heurck (1909: 14, pl. 1, figs 11, 15)

Additional References

Paddock (1990: 152, pl. 19.1, figs 5, 6), Hasle & Syvertsen (1997: 286, pl. 64, tab. 72)

Description

Cells usually united in ribbons, lanceolate in valve view; apical axis 70–125 µm; pervalvar axis 21–37 µm. Valves biarcuate in girdle view, with a depression at the central nodule. Raphe on a raised flat valve surface, dividing the valve into 2 equal sides. Raphe fins present. Transapical striae 16–20 in 10 µm, punctate.

Distribution

Coastal waters near Davis Station, East Antarctica; Weddell-Scotia Confluence (Garrison et al., 1987); Lützow-Holm Bay (Tanimura et al., 1990); in pack-ice off Wilhelm II Land (Heiden & Kolbe, 1928).

Comments

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