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 5BA5E9BA-DC88-48CD-8C11-150DEAF996EF) with original publication details: Bot. Gaz. 40 64 1905.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:23268-2.
This name was in version 1 of The Plant List, record gcc-11259.