title: Diarrhena
text: # Diarrhena
  
  Diarrhena, or beakgrain, is a genus of Asian and North American plants in the grass family.
  
  ## Species
  
  * Diarrhena americana P. Beauv. - east-central United States (OK MO AR IL IN OH KY TN AL GA NC VA WV MD PA)
  * Diarrhena fauriei (Hack.) Ohwi - Shandong, Jilin, Heilongjiang, Liaoning, Japan, Korea, Primorye
  * Diarrhena japonica Franch. & Sav. - Japan, Jeju-do, Kuril, Jilin, Heilongjiang, Liaoning
  * Diarrhena mandshurica Maxim. - Jilin, Heilongjiang, Liaoning, Primorye, Amur, Khabarovsk, Korea, Hebei, Shanxi
  * Diarrhena obovata (Gleason) Brandenburg - Ontario, east-central United States (TX OK KS NE SD MN IA MO AR IL WI MI IN OH KY TN VA WV PA NY)
  
  ## formerly included
  
  see Ammophila Catabrosa Cutandia Sphenopus Vulpia
  
  * Diarrhena aquatica - Catabrosa aquatica
  * Diarrhena divaricata - Sphenopus divaricatus
  * Diarrhena festucoides Raspail 1825 not (Raf.) Fernald 1932 - Cutandia divaricata
  * Diarrhena littoralis - Ammophila arenaria subsp. australis
  * Diarrhena maritima - Cutandia maritima
  * Diarrhena setacea - Vulpia octoflora
  