A family with only one genus which is distrbuted in southern South America in Argentina, Brazil and Chile. It also has a disjunct distribution in New Zealand which has single species.
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