⚠ Version 1 of The Plant List has been superseded.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 XElyhordeum piperi in version 1.1 of The Plant List.
This name is a synonym of XLeydeum piperi .
The record derives from Tropicos which reports it as a synonym (record 25511936
) with original publication details: Canad. J. Bot. 45: 719 719 1967.