Watch the Q&A session here: https://youtu.be/Lv5h-Pp1r6s

Looking at the plant world, one discovers beautiful and fascinating structures in the shape and arrangement of leaves, stems and roots. Some are simple and symmetric, other features are arranged in elegant Fibonacci spirals, yet others exhibit fractal-like patterns. How are these structures created with such regularity and reproducibility? Such arrangements often follow simple rules that we can fully understand mathematically.

This lecture was recorded by Alain Goriely on 11th November 2025 at Barnard's Inn Hall, London.

Professor Alain Goriely FRS is Gresham Professor of Geometry.

He is also a mathematician known for dynamical systems, mathematical biology, and mechanics. He developed the mathematical theory of biological growth and is Director of the Oxford Centre for Industrial and Applied Mathematics. His work spans plant tendrils, seashells, umbilical cords, brain modelling, and applied mathematics outreach.

The transcript and downloadable versions of the lecture are available from the Gresham College website: https://www.gresham.ac.uk/watch-now/shape-plants

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