This name is a synonym of Phoradendron quadrangulare (Kunth) Griseb..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 19100643) with original publication details: Ann. Missouri Bot. Gard. 27(3): 308 1940.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:194273-2.
This name was in version 1 of The Plant List, record tro-19100643.