Phyllotaxis - Wikipedia

Crisscrossing spirals of Aloe polyphylla In botany, phyllotaxis (from Ancient Greek φύλλον (phúllon) 'leaf' and τάξις (táxis) 'arrangement')[1] or phyllotaxy is the arrangement of leaves on a plant stem. Phyllotactic spirals form a distinctive class of patterns in nature. The basic arrangements of leaves on a stem are opposite and alternate (also known as spiral). Leaves may also be whorled if sev

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"Physical models of Phyllotaxis date back to Airy's experiment of packing of hard spheres. Douady et al. also have shown experimentally and theoretically that phyllotactic patterns emerge as self-organizing processes in dynamic systems.[4] In 1991, Levitov proposed that lowest energy configurations