This name is a synonym of Symphyotrichum frondosum (Nutt.) G.L.Nesom.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record FA904871-07B2-40CC-BA75-496029818B38) with original publication details: 165 1841.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:181260-1.
This name was in version 1 of The Plant List, record gcc-39537, and has not been changed.