This name is a synonym of Holodiscus argenteus (L.f.) Maxim..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 27806215) with original publication details: Bull. Torrey Bot. Club 70(3): 286 1943.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:123558-2.
This name was in version 1 of The Plant List, record tro-27806215.