Thalassionema frauenfeldii

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Taxonomic Group:Diatom
Trophic Status:Autotrophic
Size Range:5-7.5 μm wide x 37.5-163.6 μm long ( LUMCON Guide); 2-4 μm wide x 90-210 μm long (Cupp 1943); 54-200 μm long (Tomas 1997)
Key Characteristics:Valve ends slightly dissimilar in shape, one end more or less tapering and usually with a spine, the other end broader and rounded; cells united in star-shaped colonies
Confused With:Thalassionema nitzschioides, which has generally shorter cells and valve ends that are similar
Toxin:None known