Diatoma

{{Short description|Genus of algae}}

{{Automatic taxobox

|image = Diatoma vulgare.jpeg

|image_caption = Diatoma vulgare

|taxon = Diatoma

|authority = J.B.M.Bory de Saint-Vincent, 1824

}}

Diatoma is a genus of diatoms belonging to the family Fragilariaceae.{{cite web |title=Diatoma J.B.M.Bory de Saint-Vincent, 1824 |url=https://www.gbif.org/species/9419603 |website=www.gbif.org |access-date=19 April 2021 |language=en}}

The genus has cosmopolitan distribution.

Species:

• Diatoma angusticostata {{small|D.M.Williams & Z.Levkov, 2006}}
• Diatoma arcuatum {{small|Lyngbye, 1818}}
• Diatoma auritum {{small|Lyngbye, 1819}}
• Diatoma elongata