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Authority

Ehrenb. (Ehrenberg, 1853: 528)

Class

Diatomophyceae

Order

Pennales

Family

Striatellaceae

Synonyms

N/A

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Basionym

N/A

Additional References

Grunow (1862: 420, tab. 11, fig. 7), Heiden & Kolbe (1928: 575)

Description

Cells solitary or in zig-zag colonies, arcuate in valve view; apical axis 22–39 µm; transapical axis 6.3–8.8 µm. Transapical striae straight, 15–16 in 10 µm, each comprising a uniseriate row of areolae extending down onto the mantle. Apical pore field present at each valve pole (Fig. a). Two labiate processes per valve, 1 at each pole, lying internal to the pore field (Fig. a, b). Fibulae 15–16 in 10 µm (Fig. b). Copulae numerous; valvocopula a complete ring (Fig. d).

Distribution

Coastal waters off Davis Station, East Antarctica; Kerguelen Is. (Heiden & Kolbe, 1928).

Comments

This species is usually found attached to macrophytes (e.g. Desmarestia in the present study) or other substrata.

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