Evolution of the grass leaf by primordium extension and petiole lamina remodeling Grass leaf development models October 2021 Models published in the paper "Evolution of the grass leaf by primordium extension and petiole-lamina remodeling " Science See original manuscript and supplementary materials for a full description of the models. Models are created in the Growing Polarised Tissue Framework (https://sourceforge.net/projects/gftbox/files/ ) with a Matlab R2021a. Published models were run using rev.20210803 of the GPTFramework.