This name is a synonym of Symphyotrichum concolor (L.) G.L.Nesom.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 5A9F9524-B3B7-4EB5-821F-83C180F108D5) with original publication details: 874 1753.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:23242-2.
This name was in version 1 of The Plant List, record gcc-90348.