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 8EDB3791-B5CC-43CA-A7DD-6C91A4DA7725) with original publication details: Phytologia 55 384 1984.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:23830-2.
This name was in version 1 of The Plant List, record gcc-54254.