This name is a synonym of Symphyotrichum dumosum var. strictior (Torr. & A.Gray) G.L.Nesom.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 93656CAA-605B-4347-9379-F07247833EDB) with original publication details: Rhodora 11 31 1909.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:23342-2.
This name was in version 1 of The Plant List, record gcc-70741, and has not been changed.