A Southern Hemisphere genus with a discontinuous distribution between the Old and New World. Nine species occur in Argentina and Chile and 25 in Australia, New Zealand, New Guinea and New Caledonia.
Heywood et al. (2007)Heywood, V.H. , Brummitt, R.K. , Culham, A. and Seberg, O. 2007. Flowering Plant Families of the World. Royal Botanic Gardens, Kew