I re-checked the relevant flora botanical literature of the Flora of NSW online PlantNet :
References (in brief, without any more citiations) • https://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=fm&name=Cunoniaceae • https://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=sp&name=Callicoma~serratifolia .