This name is a synonym of Cyathea ruiziana Klotzsch.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 26612663) with original publication details: Contr. Gray Herb. 206: 61, f. 97–99 1976.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:73130-2.
This name was in version 1 of The Plant List, record tro-26612663, and has not been changed.