• Systematics & biogeography of Legumes
• Revisionary taxonomy including taxonomic monographs of Leucaena and Lupinus.
• Biogeography and historical assembly of neotropical plant diversity.
• Phylogenetics.
• Early crop domestication in Mesoamerica and the Andes.

Education and awards

1979 BSc, Univ. Aberdeen, U.K.
1980 MSc, Univ. Oxford, U.K.
1980 Commonwealth Forestry Bureau Prize, Univ. Oxford, U.K.
1981 National Tree Seed Bank, Honduras, Central America
1982 Research Assistant, Oxford Forestry Institute, U.K.
1996 PhD, Systematics of Leucaena (Leguminosae), Univ. Oxford, U.K.
1996 Irene Manton Prize, Linnean Society of London, U.K.
1996 Brian Styles Memorial Prize, Univ. Oxford, U.K.
1998 Prix Agustin-Pyramus De Candolle, Soc. Physique et Histoire Naturelle, Geneva, Switzerland
1997 Research Associate, Plant Sciences, Univ. Oxford, U.K.
1999 Jesse M Greenman Prize, Missouri Botanical Garden, U.S.A.
2000 Royal Society University Research Fellow, Plant Sciences, Univ. Oxford, U.K.
2001 Rupert Barneby Award, New York Botanical Garden, U.S.A.
2008 Departmental Lecturer, Plant Sciences, Univ. Oxford, U.K.
2010 Oberasistent, Institute for Systematic Botany, Univ. Zurich, Switzerland
2016 Stebbins Medal, International Association of Plant Taxonomy, IAPT
2022 Associated Scientist, Department of Systematic & Evolutionary Botany, Univ. Zurich, Switzerland

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