This name is a synonym of Datura ceratocaula Ortega.
The record derives from WCSP (in review)
(data supplied on 2012-03-26)
which reports it as a synonym with original publication details: Ind. Pl. Hort. Bot. Leod. 29 1828.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:941448-1.
This name was in version 1 of The Plant List, record kew-2684000.