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 50005023) with original publication details: Bot. Jahrb. Syst. 29(3–4): 371 1900.
This name was in version 1 of The Plant List, record tro-50005023.