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 80B87CD7-51F8-4221-9FE9-469C08080D4F) 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:23853-2.
This name was in version 1 of The Plant List, record gcc-38068.