Brummitt, R. (1992). Vascular plant families and genera: A listing of the genera of vascular plants of the world according to their families, as recognised in the Kew Herbarium, with analysis of relationships of the flowering plant families according to eight systems of classification. Kew: Royal Botanic Gardens.

Brummitt, R.K. Vascular Plant Families and Genera: A Listing of the Genera of Vascular Plants of the World According to Their Families, As Recognised in the Kew Herbarium, With Analysis of Relationships of the Flowering Plant Families According to Eight Systems of Classification. Kew: Royal Botanic Gardens, 1992.

Brummitt, R.K. Vascular Plant Families and Genera: A Listing of the Genera of Vascular Plants of the World According to Their Families, As Recognised in the Kew Herbarium, With Analysis of Relationships of the Flowering Plant Families According to Eight Systems of Classification. Kew: Royal Botanic Gardens, 1992.