"The Algorithmic Beauty of Plants" is an awesome book on L-systems: https://en.wikipedia.org/wiki/The_Algorithmic_Beauty_of_Plan...
For me, this book fits in the same family as Benoit Mandelbrot's "The Fractal Geometry of Nature", and Ulf Grenander's work on stochastic models for the generation of shapes like hands. And see also, cellular automata.
https://www.springer.com/us/book/9780387973869
But there is also the magisterial —
https://global.oup.com/academic/product/pattern-theory-97801...
There is a lot of published work from this school, including the seminal Geman and Geman paper from 1984, one of the most cited works in engineering.