AUTHOR=Claßen-Bockhoff Regine , Ronse De Craene Louis Philippe , Becker Annette TITLE=Editorial: From Meristems to Floral Diversity: Developmental Options and Constraints JOURNAL=Frontiers in Ecology and Evolution VOLUME=9 YEAR=2021 URL=https://www.frontiersin.org/journals/ecology-and-evolution/articles/10.3389/fevo.2021.637954 DOI=10.3389/fevo.2021.637954 ISSN=2296-701X