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 6D3C4021-091E-4F04-8B59-501D9F24D046) with original publication details: 187 1884.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:23312-2.
This name was in version 1 of The Plant List, record gcc-43234.