ABCDEFGHIJKLMNOPQRSTUVWXYZ

Authority

(Kütz.) W.Sm. (Smith, 1856: 43, pl. 15, fig. 122)

Class

Diatomohyceae

Order

Pennales

Family

Bacillariaceae

Synonyms

N/A

top

Basionym

Synedra acicularis Kütz. (Kützing, 1844: 63, pl. 4, fig. 3)

Additional References

Krammer & Lange-Bertalot (1988: 123), Chalmers et al. (1996: 45, pl. 15a)

Description

Cells solitary, lanceolate in apical view, with rostrate ends; apical axis 22–150 µm; transapical axis 1.5–5 µm. Transapical striae straight, close-set, 40–50 in 10 µm. Fibulae 15–27 in 10 µm. Central nodule absent.

Distribution

Southern Ocean, 63°26’S 99°39’E, offshore Shackelton Ice Shelf; Signy I., South Orkneys (Chalmers et al., 1996).

Comments

Nitzschia acicularis is morphologically similar to N. decipiens (see below). The specimens collected by us included cells of dimensions 22–25 µm apical axis, 1.5–2.5 µm transapical axis, striae 40–50 and fibulae 20–27 in 10 µm.

top