Neves, D M, Kerkhoff, A J, Echeverría-Londoño, S, Merow, C, Morueta-Holme, N, Peet, R K, Sandel, B, Svenning, J C, Wiser, S K & Enquist, B J 2021, ' The adaptive challenge of extreme conditions shapes evolutionary diversity of plant assemblages at continental scales ', Proceedings of the National Academy of Sciences of the United States of America, vol. 118, no. 37, e2021132118 . https://doi.org/10.1073/pnas.2021132118 Neves, D M, Kerkhoff, A J, Echeverría-Londoño, S, Merow, C, Morueta-Holme, N, Peet, R K, Sandel, B, Svenning, J-C, Wiser, S K & Enquist, B J 2021, ' The adaptive challenge of extreme conditions shapes evolutionary diversity of plant assemblages at continental scales ', Proceedings of the National Academy of Sciences of the United States of America, vol. 118, no. 37, e2021132118 . https://doi.org/10.1073/pnas.2021132118 Proceedings of the National Academy of Sciences of the United States of America