Synopsis, Africa, Rubiaceae, and Pyrostria
Plant introductions, Endemic plants, Madagascar , Africa, Grassy biomes, Loudetia simplex , and C4 plants
West Africa, Cloud forests, and Cameroon
Alpine plants
West Africa , Mesanthemum , and Taxonomy
Plant evolution and Neotropical plants
Plant pathogens , Madagascar, Pests, and Tapia
West Africa and Bowal
'Humoungus Fungus', Individualism, and Pathogenic fungus
Madagascar, Aloe, and Evolution