Our research and teaching are deeply rooted in organismal biology, i.e. the study of structure, function, and evolution at the level of the organism. We focus on questions of plant diversity – How have key structural features such as the angiosperm flower evolved? How is morphological diversity distributed among taxa? How are different structural features correlated with one another? Why are certain morphologies common and have evolved repeatedly while others are rare? We address these and related questions across a broad range of taxa and apply state-of-the art techniques as well as novel theoretical approaches to answer them.