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 6FC4AA7A-F245-446C-9516-E49E722DC8F6) with original publication details: Ill. Fl. N. U.S. 3 380 1898.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:23636-2.
This name was in version 1 of The Plant List, record gcc-69195.