This name is a synonym of Symphyotrichum laeve var. geyeri (A.Gray) G.L.Nesom.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record F574E451-23E6-4A42-ADAA-4C4C4F019802) with original publication details: Werdenda 1 42 1927.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:23931-2.
This name was in version 1 of The Plant List, record gcc-41173.