Approaches in Botany.- Rapid Radiations and Neoendemism in the Madagascan Biodiversity Hotspot.- Rapid Radiation in the Barley Genus Hordeum (Poaceae) During the Pleistocene in the Americas.- Studying Adaptive Radiation at the Molecular Level: A Case Study in the Macaronesian Crassulaceae-Sempervivoideae.- Key Innovations Versus Key Opportunities: Identifying Causes of Rapid Radiations in Derived Ferns.- Evolution of the Mating System in the Genus...