⚠ Version 1 of The Plant List has been superseded.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 Piper pseudo-aduncum in version 1.1 of The Plant List.
This name is a synonym of Piper xanthostachyum .
The record derives from Tropicos which reports it as a synonym (record 25003325
) with original publication details: Anales Inst. Fis.-Geogr. Nac. Costa Rica 9: 169 169 1897.