This name is a synonym of Argemone sanguinea Greene.
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Contr. U. S. Natl. Herb. 1: 30 1890.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:18853-2.
This name was in version 1 of The Plant List, record kew-2650557, and has not been changed.