Phyllotaxis
the spirals are counted, not admired
Generator

jugate-forks

Every fork sits at a rational divergence, with denominator 4(m² + mn + n²) — 10/28, 30/76, 74/196 and so on. The limit is 68.7539°, which is 137.5078 divided by 2, and it is at none of them.
The 2-jugate forks converge on 68.7539°Every fork sits at a rational divergence, with denominator 4(m² + mn + n²) — 10/28, 30/76, 74/196 and so on. The limit is 68.7539°, which is 137.5078 divided by 2, and it is at none of them.646668701234567fork number down the treedivergence at the fork (°)137.5078/2 = 68.7539°2-jugate · 7 forkslast fork 68.7365°

Drawn at its defaults, in whorls, and patterns with k at a time. It carries a slider over depth, so the claim in its caption strip is restated at every stop rather than at one. It takes no options at all, so every essay calling it gets this exact drawing.

Called by 1 essay

the blast radius of changing it

The pattern itself

Half the golden angle

The forks of the van Iterson tree converge on 137.5078° and sit at none of them. Divide the whole tree by two and the same thing happens at 68.7539° — which is where teasel is, and where a bijugate sunflower counted 42 and 68 has to be.

All 105 generators