Algorithmic Botany
I once used 'The Algorithmic Beauty of Plants' (<a href="http://algorithmicbotany.org/papers/#abop" rel="nofollow">http://algorithmicbotany.org/papers/#abop</a>) to build a simple L-System web service while studying: <a href="https://lsystems.raphaelpour.de/" rel="nofollow">https://lsystems.raphaelpour.de/</a>