This name is a synonym of Symphyotrichum foliaceum var. parryi (D.C.Eaton) G.L.Nesom.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record D2535C7E-2D43-4C00-8A8F-B2D91413D99E) with original publication details: 10 1932.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:23442-2.
This name was in version 1 of The Plant List, record gcc-62941, and has not been changed.