This name is a synonym of Symphyotrichum subulatum var. ligulatum (Shinners) S.D.Sundb..
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 90108865-6FAF-4419-8E04-56C9782F3C3B) with original publication details: Ill. Fl. N. U.S. 3 357 1898.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:23329-2.
This name was in version 1 of The Plant List, record gcc-46837.