This name is a synonym of Philadelphus sericanthus Koehne.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50078341) with original publication details: J. Arnold Arbor. 36(4): 361–362 1955.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:792230-1.
This name was in version 1 of The Plant List, record tro-50078341.