This name is a synonym of Arenga pinnata (Wurmb) Merr..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 181746) with original publication details: Rumphia 2: 128 1843.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:669781-1.
This name was in version 1 of The Plant List, record kew-181746, and has not been changed.