Diatomisena

Diatomisena is a taxonomic name that has appeared in some classifications as a genus within the diatoms (Bacillariophyta). Diatoms are a diverse group of mostly microscopic, photosynthetic algae with silica cell walls and a wide distribution in oceans, rivers, lakes, and soils. The use of the name Diatomisena is not consistently applied across major taxonomic references.

In contemporary taxonomy, the status of Diatomisena is uncertain or disputed. Some sources do not recognize it as a valid, distinct genus and instead treat it as a synonym of another established diatom genus, while others have treated such names as nomenclatural or descriptive anomalies. Because no universally accepted diagnostic description or type species is widely cited, Diatomisena tends to be described only in passing in broader discussions of diatom nomenclature.

If Diatomisena were to be considered valid, it would be expected to be distinguished by specific morphological or ultrastructural features of the frustule (the silica shell) that set it apart from related genera. However, without a clear, widely accepted description and type material, no definitive diagnostic characteristics are established in standard references.

Habitat and ecological notes on Diatomisena cannot be stated with confidence given the limited, unclear taxonomic treatment. In general, diatoms inhabit a range of aquatic environments and contribute to primary production and biogeochemical cycles, but no species-level information is reliably associated with the Diatomisena name in mainstream sources.

Further taxonomic scrutiny and primary literature would be required to confirm whether Diatomisena represents a valid genus, a synonym, or an historical footnote in diatom nomenclature. See also Bacillariophyta, diatoms, and taxonomic synonyms.