This name is a synonym of Symphyotrichum pilosum (Willd.) G.L.Nesom.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record AD338A8D-A04A-4080-87BF-D810C686D21A).
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 pilosus in version 1 of The Plant List.