Corrigendum: Patterns of diversification amongst tropical regions compared: a case study in Sapotaceae - Armstrong, Kate E.; Stone, Graham N.; Nicholls, James A.; Valderrama, Eugenio; Anderberg, Arne A.; Smedmark, Jenny; Gautier, Laurent; Naciri, Yamama; Milne, Richard; Richardson, James E. (Frontiers in Genetics, 2015)