Thalassionema nitzschioides (Grunow) Mereschkowsky
- Dataset
- Revisiting Potter Cove, King George Island, Antarctica, 12 years later: new observations of marine benthic diatoms
- Rank
- SPECIES
Classification
- kingdom
- Chromista
- phylum
- Ochrophyta
- class
- Fragiliariophyceae
- order
- Thalassionematales
- family
- Thalassionemataceae
- genus
- Thalassionema
- species
- Thalassionema nitzschioides
biology_ecology
Ecology and distribution: A widely distributed marine planktonic species from the Arctic to Antarctica (Hasle 2001). Rare in Potter Cove.
description
Description: Length 31 – 36 µm, width 2.5 – 3 µm, striae (single areole) 10 – 11 in 10 µm.
discussion
Remarks: Images of this species shown in Scott and Thomas (2005) from Antarctic material appear with rather different lanceolate valves and subcapitate apices and may belong to a different taxon. Valves of T. nitzschioides have almost parallel margins and rounded apices. Heiden in Heiden and Kolbe (1928) described several varieties in material collected from Antarctica based mostly on variations in valve outline. According to Hustedt (1958), these varieties may have no taxonomic validity. In the present work, only the nominate variety is considered.