''Didymosphenia'' is a genus of
diatom
A diatom (Neo-Latin ''diatoma'') is any member of a large group comprising several Genus, genera of algae, specifically microalgae, found in the oceans, waterways and soils of the world. Living diatoms make up a significant portion of Earth's B ...
s belonging to the family
Cymbellaceae
The Cymbellaceae are a diatom family in the order Cymbellales
The Cymbellales are a diatom order in the class Bacillariophyceae. They include the following families
Family (from ) is a group of people related either by consanguinity (b ...
.
The genus has almost
cosmopolitan distribution
In biogeography, a cosmopolitan distribution is the range of a taxon that extends across most or all of the surface of the Earth, in appropriate habitats; most cosmopolitan species are known to be highly adaptable to a range of climatic and en ...
.
Species:
*''
Didymosphenia fossilis''
*''
Didymosphenia geminata
''Didymosphenia geminata'' (), commonly known as didymo or rock snot, is a species of diatom that produces nuisance growths in freshwater rivers and streams with consistently cold water temperatures and low nutrient levels. It is native to the n ...
''
*''
Didymosphenia lineata''
*''
Didymosphenia pumila''
*''
Didymosphenia sublinearis''
*''
Didymosphenia tatrensis''
References
Cymbellales
Diatom genera
{{diatom-stub