This name is a synonym of Symphyotrichum novi-belgii (L.) G.L.Nesom.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record B987060B-C7DB-4039-B562-80E0B7870A99) with original publication details: Rhodora 34(397): 14-16 1932.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:23449-2.
This name was in version 1 of The Plant List, record gcc-56750.