Ester Gaya is a senior research leader at Royal Botanic Gardens in Kew, England. She began her career in mycology in Spain and lived in the United States before settling in the England. She has spent the past twenty years researching fungi and is especially fascinated by lichens and their evolutionary process.

Katie Scott studied illustration at the University of Brighton before moving to London. Her clients include the New York Times and Nike. Her work draws influences from traditional medical and botanical illustration, both in aesthetic and subject matter. Katie Scott lives in England.