Contributions to a catalogue of alien plants in Tasmania

The status of II alien plant taxa recorded in Tasmania is discussed. Hypericum L. and Solanum americanum Mill. have been recorded only once and further evidence is required to determine their status in Tasmania. Setaria pumila (PoiL) Roem. & Schult. subsp. pumila is a recent incursion of an Australian mainland weed that has been recorded once in TIasmania and has since been eradicated from the recorded site. A treatment of naturalised Cotoneaster Medik. in Tasmania is included. Genista linifolia L. and Kunzea ericoides (A.Rich.) Joy Thomps. are ornamental taxa that are naturalised in Tasmania. Tasmanian specimens of Plantago coronopus L. arc treated at subspecific rank: P. coronopus subsp. coronopus and P. coronopus subsp. commutata (Guss.) Pilg. A diagnostic description for each taxon is provided and distribution and habitat details are discussed. Keys to the Tasmanian species of Cotoneaster, Genista L., Kunzea Rchb. and Setaria 1'. Beauv., and to the subsp. of Plantago coronopus are included.