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 1F022E42-B86D-455A-BCD8-79EAD7FC6937) with original publication details: 11 1889.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:23632-2.
This name was in version 1 of The Plant List, record gcc-85985.