Neil Brummitt received his honours degree in Biological Sciences from the University of Oxford in 1995, his MSc in the Biodiversity and Taxonomy of Plants from the University of Edinburgh in 1998, and his PhD (Patterns in the Diversity and Distribution of Flowering Plant Genera) from the University of Edinburgh in 2004. Currently, he is a Principal Researcher in Botanical Diversity at the Natural History Museum, London, where he leads the Plants Under Pressure research programme, and a Member of the Boyd Orr Centre for Population and Ecosystem Health at the University of Glasgow. He specialises in plant systematics and biogeography, biodiversity modelling and monitoring, and the assessment and prioritisation of plant conservation.

Ana Claudia Araujo received her Bachelor's degree in Biology Science from the Federal University of Santa Catarina, Brazil, in 1988, her MSc in Botany from the Universidade Federal do Rio Grande do Sul in 1993, and her Ph.D. from Sao Paulo University in 2001. Currently, she is an Assistant Researcher at the Natural History Museum, the United Kingdom. She has over 30 years’ experience with herbarium collections, collecting and identifying flowering plant species in diverse vegetation, with a focus on the tropics and particularly the Neotropics. In recent years, she has been involved in assessments of threatened plant species on a global scale to help produce a Sampled Red List Index (SRLI) for plants (including non-flowering plants).