and part of 1924 on the family farm of a colleague, Zella Colvin, who had also resigned. Boyce Thompson Institute for Plant Research In 1924 Pfeiffer was offered a post at the new Boyce Thompson Institute for Plant Research in New York. Her appointment was as a plant morphologist. She specialised in developing new varieties of lilies and remained at the institute until her retirement in 1954. She lived in Yonkers, New York until moving to Dallas, Texas in her 90s, where she remained until her death. Works References 1889 births 1989 deaths American women scientists American botanists