This name is a synonym of Philodendron undulatum Engl..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 151572) with original publication details: Bot. Jahrb. Syst. 26: 556 1899.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:193034-2.
This name was in version 1 of The Plant List, record kew-151572, and has not been changed.