Map of North American Phalaris arundinacea herbarium specimens from the Global Biodiversity Information Facility (GBIF; accessed October 2021). Red = 1822-1940; blue = 1941-2018. The dotted line marks the boundary of the western cordilleras.

 
  Part of: Percy DM, Cronk QCB (2023) Report of two distinct ribotypes in ITS sequences of Phalaris arundinacea (Poaceae) in western Canada and Alaska. Biodiversity Data Journal 11: e101257. https://doi.org/10.3897/BDJ.11.e101257