This name is a synonym of Cyathea borbonica var. pervilleana C. Chr..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 26603052) with original publication details: Mem. Foug., Gen. Filic. 352 1852.
This name was in version 1 of The Plant List, record tro-26603052, and has not been changed.