This name is a synonym of Phoradendron californicum Nutt..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 19100416) with original publication details: Man. Fl. Pl. Calif. 283 1923.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:294215-2.
This name was in version 1 of The Plant List, record tro-19100416.