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 94FDEE62-F952-4518-AE00-D5F01FDA0D8B) with original publication details: Bot. Gaz. 56 477 1913.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:23592-2.
This name was in version 1 of The Plant List, record gcc-126720, and has not been changed.