⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record kew-2677881, 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: Rev. Hort. 37: 340 1866.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:671759-1.