A new species of Acomis from the Northern Territory and a new combination in the genus Thiseltonia (Asteraceae : Gnaphalieae)

The recognition of the genera Rutidosis, Acomis, and Thiseltonia is discussed. A new species, Acomis kakadu, is described from Kakadu National Park, Northern Territory, and a new combination, Thiseltonia gracillima, is made for the plant previously known as T. dyeri.