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 71AABAA2-1364-435D-995C-F5B01A0DD4F2) with original publication details: 2048 1803.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:181230-1.
This name was in version 1 of The Plant List, record gcc-140697.