This name is a synonym of Symphyotrichum defoliatum (Parish) G.L.Nesom.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 6F1FB06E-7678-48C1-8D0C-0A2E1FB48CFF) with original publication details: 1857.
This name was in version 1 of The Plant List, record gcc-5463, and has not been changed.