This name is a synonym of Symphyotrichum pilosum (Willd.) G.L.Nesom.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 22A045E5-DCDF-4018-B87E-A5DF39196AC6) with original publication details: Rhodora 32 139 1930.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:23936-2.
This name was in version 1 of The Plant List, record gcc-61354.