Yes it is Acaena sp. Thredbo River Gorge (L.A.S.Johnson & E.F.Constable s.n., 19 Jan 1951) with those glabrous stems. We'll have to review this one Michael I think. Could you add the taxa, I cannot seem to at the moment :). @MichaelBedingfield just letting you i'm not able to add species for whatever reason as well.
Note that it is called Acaena sp. Thredbo River Gorge on PlantNet: https://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=sp&name=Acaena~sp.+Thredbo+River+Gorge+(L.A.S.Johnson+;amp;+E.F.Constable+s.n.,+19+Jan+1951)