This name is a synonym of Conyza japonica (Thunb.) Less. ex Less..
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record A8A96777-231F-4026-933F-2A6EF232DCBD) with original publication details: 1903.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:185570-1.
This name was in version 1 of The Plant List, record gcc-22925.