This name is a synonym of Cota tinctoria subsp. australis (R.Fern.) Oberpr. & Greuter.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 0DE3BFEB-176F-45D1-857B-EF88F2CF31E9) with original publication details: 14 1975.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:876492-1.
This name was in version 1 of The Plant List, record gcc-70631.