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 8337B8AB-18F0-49BC-AA1E-3926E5496037) with original publication details: Hort. Kew. 3: 205 (1789) 205 1789.
This name was in version 1 of The Plant List, record gcc-30871.