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 37F65634-D65A-4C3E-8790-8EB65E4D32E1) with original publication details: Phytologia 55 382 1984.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:23940-2.
This name was in version 1 of The Plant List, record gcc-58442.