1. Rune, O. Acta phytogeogr. svec. 31, 1–139 (1953).
2. Banks, J. Endeavour Journal of Joseph Banks, 1768-1771 Vol. 1, 474 (ed. Beaglehale, J. C.) (Public Library of New South Wales, Sydney, 1962).
3. Caesalpino, A. De plantis libri Vol. 16, 369 (Marescotti, Firenze, 1583).
4. Anderson, A. J., Meyer, D. R. & Mayer, F. K. Aust. J. agric. Res. 24, 557–571 (1973).
5. Proctor, J. J. Ecol. 59, 827–842 (1971).