This name is a synonym of Rhytidophyllum auriculatum var. stipulare (Urb.) Urb..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50261323) with original publication details: Estud. Fl. Puerto-Rico 6: 260 1888.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:220789-2.
This name was in version 1 of The Plant List, record tro-50261323.