This name is a synonym of Roystonea regia (Kunth) O.F.Cook.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 180141) with original publication details: Bot. Jahrb. Syst. 63: 76 1929.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:222803-2.
This name was in version 1 of The Plant List, record kew-180141, and has not been changed.