This name is a synonym of Pachythamnus crassirameus (B.L.Rob.) R.M.King & H.Rob..
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 20A382A0-6169-4C5D-A36D-012226CBBCD2) with original publication details: Phytologia 19 228 1970.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:6872-2.
This name was in version 1 of The Plant List, record gcc-595.