This name is a synonym of Symphyotrichum pratense (Raf.) G.L.Nesom.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record B55E883B-7A7D-47CD-B0EC-E389BCBABE01) with original publication details: 113 1841.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:23929-2.
This name was in version 1 of The Plant List, record gcc-132558, and has not been changed.