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 E1517343-C018-4989-9EAA-631753E89838) with original publication details: 235 1836.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:24204-2.
This name was in version 1 of The Plant List, record gcc-53052.