This name is a synonym of Symphyotrichum sericeum (Vent.) G.L.Nesom.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record B26CF68C-EAA3-45D0-894B-E7E74A896C71) with original publication details: 111 1803.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:180674-1.
This name was in version 1 of The Plant List, record gcc-134474.