This name is a synonym of Roystonea borinquena O.F.Cook.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 180139) with original publication details: Gentes Herb. 4: 268 1939.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:669659-1.
This name was in version 1 of The Plant List, record kew-180139.