XVI International Botanical Congess

Little is known about pollination and breeding systems of most genera in the Caesalpinioideae. A survey will collate available data and highlight critical gaps. The question of whether reproductive biology data provides evidence for phylogenetic relationships within the subfamily will be addressed. Bee, butterfly, bird and bat pollination have apparently evolved several times in diverse genera. Beetle pollination might be more important than previously reported. There are some advanced sexual systems in some of the basal genera. Specific examples will be presented. Andromonoecy is more common than previously recognised and late-acting self-incompatibility systems play a role in the breeding systems of some genera. Pollination syndromes will be mapped onto existing phylogenies of the subfamily and their distributions discussed.