This name is a synonym of Sclerolaena costata A.J. Scott.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 7202177) with original publication details: Feddes Repert. 89: 113 1978.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:167332-1.
This name was in version 1 of The Plant List, record tro-7202177, and has not been changed.