This name is a synonym of Symphyotrichum laeve (L.) Á.Löve & D.Löve.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 9CB35DC2-4C67-4446-AA49-B281E2E59754) with original publication details: 246 1836.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:181046-1.
This name was in version 1 of The Plant List, record gcc-111163.