Previous Palm Symposia
- Ithaca: Liberty Hide Bailey Hortorium, Cornell University, June 19-20, 1987
- Miami: Fairchild Tropical Garden, 20-21 October 1995
- New York Botanical Garden, 18-20 June 1997
Memoirs: A. Henderson & F. Borchsenius (eds.). 1998. Variation, evolution, and classification of palms. New York Botanical Garden, New York. - The Linnean Society of London and the Royal Botanic Gardens, Kew, 6-8 April 2005.
Memoirs: Botanical Journal of the Linnean Society vol. 151, 2006.. - Montpellier, France, 4-7 June 2010.
Memoirs: Annals of Botany 108 (8), 2011.