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 1873F983-7484-4BED-8D5C-262EE23C6C4B) with original publication details: 164 1841.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:181869-1.
This name was in version 1 of The Plant List, record gcc-20631.