Phyllotaxis
the spirals are counted, not admired
Concept

Rising phyllotaxis — where it appears

2 essays name this object, across 2 fields. What follows is each of them, and the objects they name alongside it.
0255075406080fraction of the head's radiusparastichy numbers found in a band there1000 primordia at the golden angle4 different pairs

The counts change with radius

The same head gives 13 and 21 near the centre, 21 and 34 further out, 34 and 55 beyond that, and 55 and 89 at the rim. The transitions are at computable radii, and a photograph captioned with one pair is a statement about one annulus rather than about a flower.

lattices · transitions 1/2 at the bottom, 5/8 at the top167 nodes · rise 0.2 → 0.004542 nodes per rung

A pattern with a rate

Every lattice on this site is a static object indexed by a parameter, and a plant is not. Put the rise on a clock, place each node where the repulsion from the ones below it is least, and the object that comes out has a history — which is the first thing here that could disagree with the ladder.

emergence · rising

Named alongside it

The objects these essays reach for when they reach for this one.

BranchRiseTransitionsAnnulusContinued fractionContinued fraction convergentDivergence angleFibonacciHistoryLattice offsetNodes per rungNoise

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