Phylogeny and evolution of basils and allies (Ocimeae, Labiatae) based on three plastid DNA regions - Paton, A J; Springate, D; Suddee, S; Otieno, D; Grayer, R J; Harley, M M; Willis, F; Simmonds, M SJ; Powell, M P; Savolainen, V (Mol Phylogenet Evol, 2004)