ABCDEFGHIJKLMNOPQRSTUVWXYZ

Authority

A.F.W.Schimp., in Karsten (1905: 99, pl. 11, fig. 6)

Class

Diatomophyceae

Order

Centrales

Family

Rhizosoleniaceae

Synonyms

N/A

top

Basionym

N/A

Additional References

Hendey (1937: 314), Priddle & Fryxell (1985: 80, figs A, B), Sundström (1986: 59, figs 26–27, 139–143), Priddle et al. (1990: 118, pl. 15.3, fig. 1), Hasle & Syvertsen (1997: 150, pl. 28, tab. 34), Armand & Zielinski (2001: pl. 3A, figs 10, 11)

Description

Cells solitary or in pairs or short chains, large, cylindrical. Valves short-conical, bilaterally symmetrical, finely areolate; areolae 27 in 10 µm; apical axis 100–165 µm (160–220 µm, fide Hendey, 1937). Process c. 50 µm long, robust basally, tapering distally (often broken during the preparation of material for microscopy). Otaria present, ending at the junction of the valve apex and the basal part of the process; distal margin of otaria concave. Claspers prominent. Intercalary girdle bands in 2 and 4 (6, fide Karsten, 1905: pl. 11, fig. 6a) dorsiventral columns, finely areolate; areolae 22–24 in 10 µm. Chloroplasts small, numerous.

Distribution

Southern cold-water regions (Hasle & Syvertsen, 1997); Weddell Sea, South Sandwich Is. and South Georgia (Hendey, 1937); Wilkes Coast, 62°S 135°E and 64°S 115°E (Wood, 1960); Antarctic Permanent Open-Ocean Zone to Sea-Ice Zone (Armand & Zielinski, 2001).

Comments

N/A

top