This name is a synonym of Symphyotrichum tenuifolium (L.) G.L.Nesom.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record E9782397-7E0C-4272-8174-6F696FD882DB) with original publication details: 154 1818.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:181228-1.
This name was in version 1 of The Plant List, record gcc-81269.