| 1955 | Lecturer, Auckland University College |
| 5 September 1930 | Born Auckland, New Zealand |
| 1956 - 1957 | Teaching fellow, University of Sydney |
| 1958 - 1959 | CSIRO Postgraduate Student |
| 1960 - 1961 | CSIRO Overseas Postgraduate Student, Botany School and Cavendish Laboratory, University of Cambridge |
| 1961 - 1964 | Lecturer in Botany, University of Melbourne |
| 1964 - 1966 | Senior Lecturer in Botany, University of Melbourne |
| January 1967 - 1986 | Professor of Botany, University of Melbourne |
| 1986 - ? | Director, Royal Botanic Gardens and the Domain, Sydney |