This name is a synonym of Symphyotrichum anomalum G.L.Nesom.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record AAFB092C-BF9D-4CB4-B2A7-351AEAF335EF).
This name record (from TICA) was not included in version 1 of The Plant List. It is possible the same name was included from a different data source, to check this you can search for Aster anomalus in version 1 of The Plant List.