This name is a synonym of Philadelphus microphyllus var. argyrocalyx (Wooton) Henrickson.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50307850) with original publication details: Contr. W. Bot. 12: 14 1908.
⥇ A cross-taxon basionym link was ignored while processing this record,
see Philadelphus argyrocalyx Wooton.
This name was in version 1 of The Plant List, record tro-50307850.