The megaherbs "Anisotome antipoda", "Anisotome latifolia", "Bulbinella rossii", "Pleurophyllum criniferum", "Pleurophyllum hookeri", "Pleurophyllum speciosum" and "Stilbocarpa polaris" were historically found from the coast into the alpine, however the distribution and populations of these species have been severely impacted by the actions of introduced pigs.