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 266ADE5C-F711-4E0B-9ECF-A94747D2E8DE) with original publication details: 74 .
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:23038-2.
This name was in version 1 of The Plant List, record gcc-61754.