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Authority

Cleve (1889: 54)

Class

Diatomophyceae

Order

Centrales

Family

Leptocylindraceae

Synonyms

N/A

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Basionym

N/A

Additional References

Cupp (1943: 78, fig. 39), Hasle (1975: 125, fig. 143), Hasle & Syvertsen (1997: 95, pl. 14, tab. 18)

Description

Cells solitary or united by valve faces into long chains, cylindrical, weakly silicified, thin-walled and hyaline; pervalvar axis with numerous rhomboidal girdle bands (not visible by LM). Valves circular; apical axis 5–16 µm. Of the adjacent cells in a chain, one valve is slightly concave, the other convex. Small broad pointed spines border the zone between the valve face and mantle. Labiate processes absent. Chloroplasts numerous, small.

Distribution

Cosmopolitan, but absent or scarce in the sub-Antarctic and Antarctic (Hasle & Syvertsen, 1997); Drake Passage (Rivera, 1983).

Comments

N/A

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