Cymbellales

Gomphonema is a genus of diatoms belonging to the family Gomphonemataceae.

Cymbella is a diatom genus in the family Cymbellaceae including over 800 species. The type species for this genus is Cymbella cymbiformis Agardh 1830. Cymbella species are found in freshwater environments.

species of alga

The Cymbellales are a diatom order in the class Bacillariophyceae. They include the following families: Anomoeoneidaceae Cymbellaceae Gomphonemataceae Rhoicospheniaceae

The Cymbellaceae are a diatom family in the order Cymbellales.