This name is a synonym of Symphyotrichum ascendens (Lindl.) G.L.Nesom.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 4CFCC70D-D541-4CD1-86F3-05BF25D41E65) with original publication details: 126 1841.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:181860-1.
This name was in version 1 of The Plant List, record gcc-3113.