To share records of invasive plants that are impacting upon mountain areas in Australia and New Zealand. The focus is on locating invasive plants that are transformer species - ie. capable of transforming an ecosystem, eg. modifying grasslands into shrub-lands. The definitions of naturalised plants, invasive plants and transformers follows that recommended by C.Hui and D.M Richardson(2017) Invasion Dynamics, Oxford University Press, as outlined in the following link: