This name is a synonym of Hydrangea paniculata Siebold.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50000615) with original publication details: Nat. Pflanzenfam. (ed. 2) 18a: 203 1930.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:791679-1.
This name was in version 1 of The Plant List, record tro-50000615, and has not been changed.