This name is a synonym of Symphyotrichum cordifolium (L.) G.L.Nesom.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 0FD96923-6CB4-4E86-9022-84BC92F7ED7C) with original publication details: Rhodora 19 155 1917.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:311239-2.
This name was in version 1 of The Plant List, record gcc-57226.