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 795EB428-BE18-44DA-9437-B0E1C6A3F1F1) with original publication details: 195 1856.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:23039-2.
This name was in version 1 of The Plant List, record gcc-62701.