This name is a synonym of Symphyotrichum cusickii (A.Gray) G.L.Nesom.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 22603406-E211-4F45-A949-D40DE339D545) with original publication details: Proc. Amer. Acad. Arts 16 99 1881.
This name was in version 1 of The Plant List, record gcc-125863.