This name is a synonym of Symphyotrichum hendersonii (Fernald) G.L.Nesom.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 800B2E92-D03D-4630-9AC7-19D6623C16C2) with original publication details: Amer. Midl. Naturalist 29 443 1943.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:23446-2.
This name was in version 1 of The Plant List, record gcc-13907, and has not been changed.