This name is a synonym of Crepidiastrum denticulatum (Houtt.) Pak & Kawano.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 13469B74-F485-4042-98ED-0AA39A4C33F9) with original publication details: Prim. Fl. Amur. 181. 181 1859.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:261104-1.
This name was in version 1 of The Plant List, record gcc-5719.