Phyllotaxis
Sunflower seed spirals: golden-angle dots and Fibonacci parastichies.
Pens
Seed growth bands and Fibonacci spiral families share the pens. Starts with 4 pens and works with anywhere from 1 to 8.
Settings
Seeds, Angle offset°, Radial exponent, Draw, Shape, Sides, Dot size, Growth, Rings per dot, Parastichies, Pair, Link reach.
The preview uses the default settings on A4. Press R in the app for random variations. The SVG export is in millimetres with one Inkscape layer per pen, so it works with the AxiDraw extension, vpype and saxi.