This name is a synonym of Symphyotrichum campestre (Nutt.) G.L.Nesom.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record E6832D7C-06AB-4742-989D-5F96F002E95B) with original publication details: Contr. U. S. Natl. Herb. 11 572 1906.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:23167-2.
This name was in version 1 of The Plant List, record gcc-51553.