⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record kew-2650564, and has not been changed.
This name is a synonym of Argemone pleiacantha subsp. ambigua Ownbey.
The record derives from WCSP (in review) which reports it as a synonym with original publication details: S. W. Naturalist 3: 214 1959.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:18858-2.