Oral records and traditions on the use of ngutu kaka are now sketchy at best - and it has been considered a priority by DOC to find out what ethnobotanical information on this genus still exists. Irrespective, it is clear that the two species of the genus were taonga - probably because they have red flowers and whero / wero was a colour of currency to iwi (as was shown with Hebe speciosa - which was traded by northern iwi interacting with southern iwi). Various accounts suggest that Clianthus flowers were worn in the ears, and the species were certainly grown around kainga and portage sites - in fact some of the first collections ever made came from kainga. Could I suggest you try emailing Don McLean (dmclean@doc.govt.nz) who heads the recovery team for this genus and ask him for further contacts - as he has them amongst Ngati Porou and Tuhoe, where the best oral traditions are still kept.