⚠ Version 1 of The Plant List has been superseded.
This name record (from Tropicos) is not included in version 1.1 of The Plant List. It is possible the same name is included from a different data source, to check this you can search for Bromus oregonus in version 1.1 of The Plant List.
This name is a synonym of Bromus catharticus .
The record derives from Tropicos which reports it as a synonym (record 25531615
) with original publication details: Hooker's J. Bot. Kew Gard. Misc. 8: 18 18 1856.