This name is a synonym of Symphyotrichum pilosum var. pringlei (A.Gray) G.L.Nesom.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 5888F03C-1716-4564-B867-3057B8FEB69D) with original publication details: Mem. Torrey Bot. Club 5 323 1894.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:23424-2.
This name was in version 1 of The Plant List, record gcc-26145.