This name is a synonym of Symphyotrichum hendersonii (Fernald) G.L.Nesom.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 56DFE4CC-3560-4C27-8EB6-35D2B2DF4F2C) with original publication details: 195 1884.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:23291-2.
This name was in version 1 of The Plant List, record gcc-29117, and has not been changed.