Indigenous plants are being increasingly harvested for traditional medicines, an activity some regard as a form of poaching. Such produce can be found on sale as remedies on the streets of Cape Town's central business district. Indigenous species are also threatened by invasive plants such as Acacia cyclops, three Hakea species, and invasive pines that were planted in commercial timber plantations on the slopes of the mountain also . Today the Table Mountain range has the highest concentration of threatened species of any continental area of equivalent size in the world.