On 26th March 2019 FOR2581 Quantitative Plant Morphodynamics research unit held its 4th meeting at the Technical University of Munich. The group was delighted to have Dr. Célia Baroux as a guest, who held a talk about the contribution of ovule patterning to reproductive lineage establishment in Arabidopsis. In addition, the PIs, PhD students, and postdocs presented the latest results of their joined projects and were able to meet and discuss their research.