This name is a synonym of Symphyotrichum falcatum var. commutatum (Torr. & A.Gray) G.L.Nesom.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 87C43201-CDAB-424A-8AB0-9E9ED4722623) with original publication details: Bull. Torrey Bot. Club 74 144 1947.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:23421-2.
This name was in version 1 of The Plant List, record gcc-60489.