Ko e olavai pe tutuna ko e fuʻu ʻakau lahi ia. ʻOku tupu pē ʻi ʻEua (pea mo Haʻamoa). ʻOku manakoa ʻa hono foʻi fua ʻe he ngaahi manupuna. Ko hono ʻuhinga tatau: Villaresia samoensis.
- tutuna; vakai foki ki he koli mo e masi
- tutuna, Psychotria insularum (RUBIACEAE) {wild island coffee}
- Hokohoko ngaahi ʻakau; Vaʻa fekumi ngoue Vainī
- Tongan dictionary; C.M. Churchward
- Plants of Tonga; T.G. Yuncker; BPB bulletin 220, Honolulu 1959
- D.R. Drake et al., Rain forest vegetation of ʻEua Island, New Zealand Journal of Botany 34, 1996