This name is a synonym of Dieteria canescens var. glabra (A.Gray) D.R.Morgan & R.L.Hartm..
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 41A53945-BBAE-41C7-899D-66842621EAAE) with original publication details: 206 1884.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:23178-2.
This name was in version 1 of The Plant List, record gcc-53478, and has not been changed.