This name is a synonym of Cyathea andohahelensis (Tardieu) Tindale.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50150469) with original publication details: Adansonia, sér. 3, 21(1): 141 1999.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:17572130-1.
This name was in version 1 of The Plant List, record tro-50150469.