Tasmania has five introduced species of Papaver (poppies). A sixth species (P. aculeatum) is listed in the Student's Flora, but this species appears to no longer occur in Tasmania outside gardens. These plants with showy flowers are common weeds.

P. somniferum (opium poppy) is easily distinguished from the other species by its glaucous, only slightly dissected leaves.

nb other genera of Papaveraceae also have large showy "poppy" flowers, but lack the pepper shaker capsules with the fused stigmas.