Contributions to a catalogue of alien plants in Tasmania IV

Abstract

The status of four alien plant taxa in Tasmania is discussed. Mirabilis jalapa L., Phytolacca octandra L., Coleonema pulchellum I.Williams and Gomphocarpus fruticosus (L.) W.T.Aiton are ornamentals that are now recognised as naturalised in Tasmania. A description for each taxon is provided and distribution and habitat details are discussed. The status of two species that are recorded as naturalised in Tasmania but are not represented in the Tasmanian Herbarium collection was also investigated. Veronica peregrina L. is known from two collections from Tasmania whilst the name Silene longicaulis Pourr. ex. Lag. was found to be misapplied to Tasmanian specimens of Silene colorata Poir.