Dutchman's pipe has been introduced to Australia and is proving to be a very destructive species. The vine is similar to the native species in Australia, but contains different toxins in its leaves, which are poisoning the butterfly larvae that feed on the leaves. Even in the presence of native vine species, the birdwing butterflies are choosing the Dutchman's pipe species. In the land down under, the Dutchman's pipe might be branded as a butterfly killer, but ironically, in its native North American environment it has its own group of butterflies that depend on it to feed their larvae.