⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record tro-50307851, with some changes.
This name is a synonym of Philadelphus microphyllus subsp. argenteus (Rydb.) C.L. Hitchc..
The record derives from Tropicos which reports it as a synonym (record 50307851) with original publication details: Nat. Pflanzenfam. (ed. 2) 18a: 193 193 1930.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:192760-2.