⚠ Version 1 of The Plant List has been superseded.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 Vilfa rigens in version 1.1 of The Plant List.
This name is a synonym of Muhlenbergia rigens .
The record derives from Tropicos which reports it as a synonym (record 25537413
) with original publication details: Bot. California 2: 276 276 1880.