Theme Issue ‘Contemporary and future studies in plant speciation, morphological/floral evolution and polyploidy: honouring the scientific contributions of Leslie D. Gottlieb to plant evolutionary biology’ compiled and edited by Daniel J. Crawford, Jeffrey J. Doyle, Douglas E. Soltis, Pamela S. Soltis and Jonathan F. Wendel

05 August 2014; volume 369, issue 1648