flat computer generated self-similar l-system branching tree fractal pythagorean tree - generative art

fractal art l-system lindenmayer rewrite system computer generated generative model self-similar self-similarity abstract branching self-contacting binary recursion endless repeating digital morphogenesis pattern design ornament decor tracery tree plant weed herb grass branch umbrella umbelliferous umbellate inflorescence mathematical mathematics curve pythagorean pythagoras fluffy fuzzy furry downy cottony feathery