Botanist Madeline Harley was, until her retirement in 2005, Head of the Pollen Research Unit at the Royal Botanic Gardens, Kew. Her research work, which is internationally recognised, is concerned mainly with the study of species-specific pollen characteristics in the field of flowering plant evolution and relationships. She has authored or co-authored more than 80 professional articles and books. She has presented her work at numerous international conferences. Dr Harley is a Fellow of the Linnean Society and holds an Honorary Research Fellowship for her work at the Royal Botanic Gardens, Kew.