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 E3825FA8-4A5B-4F09-8CA1-35DC2EB70AB8) with original publication details: 191 1884.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:181257-1.
This name was in version 1 of The Plant List, record gcc-29142.