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 99715F3D-DC90-4E81-8531-1CD7AFB76DA2) with original publication details: Bull. Torrey Bot. Club 18 170 1891.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:23464-2.
This name was in version 1 of The Plant List, record gcc-73533.