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 19101109) with original publication details: Phoradendron 105, t. 149 1916.
This name was in version 1 of The Plant List, record tro-19101109.