“…is currently used in many parts of New Zealand to treat illnesses that those further north might treat with Kūmarahou (Māori Plant Use Database, 2018b). Harvesting of species with expanding ranges, such as Kūmarahou, instead of previously harvested species, such as Kawakawa, may alter dynamics of ecological communities (Dao & Hölscher, 2018;Ticktin, 2004;Trauernicht & Ticktin, 2005) and cultural knowledge (Clavero, 2014;Hall, 2009;Shackleton et al, 2007) This kind of species expansion could affect inter-tribal reciprocity and gifting practices (Henrich & Gil-White, 2001;Kawharu, 2000;Roberts, Norman, Minhinnick, Wihongi, & Kirkwood, 1995;Thomas, 1991;Walter, Jacomb, & Bowron-Muth, 2010), because similar increases in access to prestige goods have destabilized other Indigenous sociocultural systems (Bayart, 1978;Peregrine, 1999;Wesson, 2008).…”