Global Working List of Exceptional Plants An initial list of 775 exceptional plants has been compiled using information from the Seed Information Database, the list of North American exceptional species compiled by Helm-Wallace (2015), targeted literature search, and expert input. It includes both threatened and non-threatened exceptional species, and currently represents 3% or less of the number of predicted exceptional species globally. Thus, this list is a working list and will require input from researchers worldwide to continue to grow. If you have information on a species that should be added to the list, or have any additional information on species that are already listed, please submit that using the form below. Updated versions of the list will be posted periodically. To add species to the Global Working List of Exceptional Plants or comment on species already listed, please use this form or email [email protected] You can read about the definition of exceptional plants, background on how the list was created, and some analyses of the list in the following two open access papers: Pence, V.C., Meyer, A., Linsky, J., Gratzfeld, J., Pritchard, H.W., Westwood, M., and Beckman Bruns, E. 2022. Defining exceptional species—A conceptual framework to expand and advance ex situ conservation of plant diversity beyond conventional seed banking. Biological Conservation 266. https://doi.org/10.1016/j.biocon.2021.109440. Pence, V.C., Beckman Bruns, E., Meyer, A., Pritchard, H.W., Westwood, M., Linsky, J., Gratzfeld, J., Helm-Wallace, S., Liu, U., Rivers, M., and Beech, E. 2022. Gap analysis of exceptional species—Using a global list of exceptional plants to expand strategic ex situ conservation action beyond conventional seed banking. Biological Conservation 266. https://doi.org/10.1016/j.biocon.2021.109439. Appendix B of Gap Analysis of Exceptional Species contains the full Exceptional Status List, an evaluation of more than 23,000 species as exceptional, non-exceptional, probably non-exceptional, and species with insufficient data (B.1). Appendix B also contains a List of Threatened Congeners of Exceptional Plants, including more than 7,000 species (B.5). We welcome new or additional information for future updates of these lists, using this form or email [email protected].