This name is a synonym of Symphyotrichum fendleri (A.Gray) G.L.Nesom.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 628D9C77-DA2A-48E6-91E1-B8391AEBA0DA) with original publication details: 97 1857.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:23841-2.
This name was in version 1 of The Plant List, record gcc-63607, and has not been changed.