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 50245548) with original publication details: Phoradendron 112, f. 163b 1916.
This name was in version 1 of The Plant List, record tro-50245548.