⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record kew-2677861, and has not been changed.
This name is a synonym of Macleaya cordata (Willd.) R.Br..
The record derives from WCSP (in review) which reports it as a synonym with original publication details: Ann. Mus. Bot. Lugduno-Batavi 3: 11 1867.