Phyllotaxis (Vogel Spiral)
Phyllotaxis — golden-angle sunflower packing
700 florets placed at angle k·137.507° and radius c·√k. The golden angle alone produces the interleaved parastichy spirals you see — no spiral is drawn, they emerge.
Paper / citationHelmut Vogel, “A better way to construct the sunflower head,” Math. Biosciences 44(3–4):179–189 (1979).
https://doi.org/10.1016/0025-5564(79)90080-4
https://doi.org/10.1016/0025-5564(79)90080-4
◈Made by real computation — every vertex is produced by the algorithm’s own math, integrated or iterated from the paper’s equations. No tracing, no decoration, no image model.