title: Fragilariophyceae
text: # Fragilariophyceae
  
  Fragilariophyceae is a group of pennate diatoms lacking a raphe.
  
  ## Examples
  
  It includes the following genera:
  
  ### Fragilariales
  
  * Ardissonea
  * Asterionella
  * Asterionellopsis
  * Catacombas
  * Diatoma
  * Fragilaria
  * Fragilariforma
  * Grammonema
  * Hyalosynedra
  * Neofragilaria
  * Opephora
  * Pseudostaurosira
  * Punctastriata
  * Staurosira
  * Staurosirella
  * Synedra
  * Synedropsis
  * Tabularia
  * Ulnaria
  
  ### Striatellales
  
  * Hyalosira
  * Striatella
  * Toxarium
  
  ### Other
  
  * Climacosphenia
  * Cyclophora
  * Delphineis
  * Protoraphis
  * Rhabdonema
  * Rhaphoneis
  * Tabellaria
  * Thalassionema
  