This name is a synonym of Aster willkommii subsp. discoideus (Willk.) A.Bolòs.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 734EACBA-BD6C-4743-9EBB-61B2058E2CCB) with original publication details: 54 1852.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:181082-1.
This name was in version 1 of The Plant List, record gcc-52698, and has not been changed.