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 7DCA2822-7BC2-4F50-9375-C0916507D8D1) with original publication details: 122 1832.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:181894-1.
This name was in version 1 of The Plant List, record gcc-117393.