Watson 1950: Henry Nicholas Ridley 1951: Theodor Mortensen 1952: Isaac Henry Burkill 1953: Patrick Alfred Buxton 1954: Felix Eugene Fritsch 1955: Sir John Graham Kerr 1956: William Henry Lang 1957: Erik Stensiö 1958: Sir Gavin de Beer and William Bertram Turrill 1959: H. M. Fox and Carl Skottsberg 1960: Libbie H. Hyman and Hugh Hamshaw Thomas 1961: and F. S. Russle [sic] 1962: Norman L. Bor and Guillermo Kuschel 1963: Sidnie M. Manton and William H. Pearsall 1964: Richard E. Holttum and Carl Frederick Abel Pantin 1965: John Hutchinson and John Ramsbottom 1966: George Stuart Carter and Sir Harry Godwin 1967: Charles Sutherland Elton and Charles E. Hubbard 1968: and T. M. Harris 1969: Irene Manton and Ethelwynn Trewavas 1970: E. J. H. Corner and Errol I. White 1971: Charles Russell Metcalfe and James Edward Smith 1972: Arthur Roy Clapham and Alfred Romer 1973: G. Ledyard Stebbins and John.Z.Young 1974: E. H. W. Hennig and Josias Braun-Blanquet 1975: A. S. Watt and Philip M Sheppard 1976: William Thomas Stearn 1977: Ernst Mayr and Thomas G. Tutin 1978: and Thomas Stanley Westoll 1979: Robert McNeill Alexander and P. W. Richards 1980: Geoffrey Clough Ainsworth and Roy Crowson 1981: Brian Laurence Burtt and Sir Cyril Astley Clarke 1982: Peter Hadland Davis and Peter H. Greenwood 1983: Cecil T. Ingold and Michael J. D. White 1984: John G. Hawkes and J. S. Kennedy 1985: Arthur Cain and Jeffrey B. Harborne 1986: Arthur Cronquist and Percy C. C. Garnham 1987: Geoffrey Fryer and V. H. Heywood 1988: John L. Harley and Sir Richard Southwood 1989: William Donald Hamilton and Sir David Smith 1990: Sir Ghillean Tolmie Prance and F. Gwendolen Rees 1991: William Gilbert Chaloner and R. M. May 1992: Richard Evans Schultes and Stephen Jay Gould 1993: Barbara Pickersgill and Lincoln Brower 1994: and Sir Alec John Jeffreys 1995: S. M. Walters and John Maynard Smith 1996: Jack Heslop-Harrison and Keith Vickerman 1997: Enrico S. Coen and Rosemary Helen Lowe-McConnell 1998: Mark W. Chase and C. Patterson 1999: Philip Barry Tomlinson and Quentin Bone 2000: Bernard Verdcourt and Michael F. Claridge 21st century 2001: Chris Humphries and 2002: Sherwin Carlquist and 2003: Pieter Baas and Bryan Campbell Clarke 2004: Geoffrey Allen Boxshall and John Dransfield 2005: Paula Rudall and 2006: David Mabberley and Richard A. Fortey 2007: and Thomas Cavalier-Smith 2008: and Stephen Donovan 2009: Peter Shaw Ashton and Michael Akam 2010: Dianne