Phyllotaxis
the spirals are counted, not admired
Concept

Flare — where it appears

2 essays name this object, across one field. What follows is each of them, and the objects they name alongside it.
3 and 5 near the apex8 and 13 near the baseflare 0.35 · step 1 · 105 nodescounted 3/5 then 8/13

A cone has a rise that falls

A stem holds one parastichy pair for ever and a seed head changes its pair with radius. A cone does both — it is a cylinder whose rise falls as one over the distance from the apex, and the same blind counter that finds one answer up a stem finds four up a cone.

cylinder · cone 024680.2000.4000.6000.8001counting only outside this fraction of the organ's length or radiustransitions inside the counted partdisc: 2 beyond 50%cone: 1 beyond 50%flare 0.12 · 4000 elements1 against 2 in the outer 50%

Why a cone can be counted once

A pineapple is described as 8 and 13 and the description holds. A sunflower is described as 34 and 55 and the description is a statement about one annulus. Both organs have the same ladder in element number — what differs is where an organ puts its elements.

cylinder · organ size

Named alongside it

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

ConeLadderRiseTransitionsCounting blindBranch pointCountable regionCylinderDevelopable surfaceDivergence angleElement numberOgive

All concepts