This name is a synonym of Symphyotrichum praealtum (Poir.) G.L.Nesom.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym and as an illegitimate name (record 3E3D79A0-6130-4559-8E15-A4206320A8A8) with original publication details: 203 1789.
This name was in version 1 of The Plant List, record gcc-104737.