OLIVER, C. Species Plantarum Flora of the World: Introduction to the Series. A. E. Orchard. Canberra: Australian Biological Resources Study. 1999. Iv+91pp. ISBN 0 642 56804 9. Species Plantarum Flora of the World: Part 1, Irvingiaceae. David J. Harris. Canberra: Australian Biological Resources Study. 1999. V+25pp.ISBN 0 642 56800 6. Edinburgh J. Bot. 2000, 57 (1), 141-150. https://doi.org/10.1017/S0960428600230096.