This name is a synonym of Symphyotrichum depauperatum (Fernald) G.L.Nesom.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 6C2C6C6C-3735-4414-8B9C-A1A5FB4B7EC5) with original publication details: Rhodora 11 59 1909.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:23896-2.
This name was in version 1 of The Plant List, record gcc-60841.