This name is a synonym of Symphyotrichum ontarionis (Wiegand) G.L.Nesom.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record E68661DD-2377-4131-811D-0C316192A5DE) with original publication details: Syn. Fl. N. Amer. 1(2) 187 1884.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:23314-2.
This name was in version 1 of The Plant List, record gcc-6573.