This name is a synonym of Phoradendron juniperinum A. Gray.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 19101019) with original publication details: Bot. California 2: 105 1880.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:194101-2.
This name was in version 1 of The Plant List, record tro-19101019.