Metrosideros diffusa, the white rātā, climbing rātā or in Māori akakura, is a forest liane or vine endemic to New Zealand. It is one of a number of New Zealand Metrosideros species which live out their lives as vines, unlike the northern rata (M.robusta), which generally begins as a hemi-epiphyte and grows into a huge tree. It is one of three white flowering rātā vines (the others being large white rātā and small white rātā). White...