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 26E2BFB7-65BE-43B0-B5E7-C8039AF38626) with original publication details: Bull. Torrey Bot. Club 29 645 1902.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:23308-2.
This name was in version 1 of The Plant List, record gcc-120633, and has not been changed.