This name is a synonym of Symphyotrichum spathulatum (Lindl.) G.L.Nesom.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 7C2C9599-A390-4831-9E2B-51F6A32F2287) with original publication details: 192 1884.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:23465-2.
This name was in version 1 of The Plant List, record gcc-44265.