The aim of IAPI is to bring together botanists and illustrators to use their combined skills for illustrating the diversity of plant structure and function.  Projects are one way to do this by encouraging members to work on a chosen topic, to build up a body of work from which items can be selected for exhibition and publication.  Previous projects have been on climbing plants (published as a supplement to Eryngium 2014), nuts, and the potato and tomato family Solanaceae.