This name is a synonym of Symphyotrichum kralii G.L.Nesom.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym and as an illegitimate name (record 094FA3DB-E6AE-4D26-B4F1-54C6F3275EEA) with original publication details: 1387 1933.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:314745-2.
This name was in version 1 of The Plant List, record gcc-45728, and has not been changed.