This name is a synonym of Symphyotrichum lateriflorum (L.) Á.Löve & D.Löve.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record C8891714-2537-4E97-9005-46E4CDDF244B) with original publication details: 130 1841.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:23762-2.
This name was in version 1 of The Plant List, record gcc-38217.