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 20144) with original publication details: Deutsche Bot. Monatsschr. 21: 173 1903.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:29979-2.
This name was in version 1 of The Plant List, record kew-20144, and has not been changed.