This name is a synonym of Symphyotrichum lanceolatum (Willd.) G.L.Nesom.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record CA1AE9D2-CDFC-4C17-A40D-368F5745E359) with original publication details: Rhodora 6 131 1904.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:23887-2.
This name was in version 1 of The Plant List, record gcc-29520.