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 D8C368DA-AB7A-4303-850E-1B5BCC9195A2) with original publication details: Phytologia 63(2): 132 1987.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:272855-2.
This name was in version 1 of The Plant List, record gcc-14745.