This name is a synonym of Ixeridium gracile (DC.) Pak & Kawano.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym and as an illegitimate name (record 3D7BE479-143B-4573-B51C-587A7975FBB1) with original publication details: 1993.
This name was in version 1 of The Plant List, record gcc-47762.