This name is a synonym of Aster ageratoides var. tenuifolius Kitam..
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 4B0FAF54-9690-4856-9C9E-CF6416D3572E) with original publication details: 88 1953.
This name was in version 1 of The Plant List, record gcc-123866, and has not been changed.