Related topics include the golden ratio, the golden angle, and the Fibonacci sequence.

Refers to the arrangement (taxis) of leaves (phyllo) on a plant stem. Also can refer to seed arrangements and succulent geometry.

Types:

• Opposite - two leaves arise from the stem at the same level on opposite sides of the stem
• Alternate - each leaf arises at a different point (node) on the stem
• Whorled - arrangement of leaves that radiate from a single point and surround or wrap around the stem, as seen in the thumbnail for this section.
• Distichous - special case of either opposite or alternate leaf arrangement where the leaves on a stem are arranged in two vertical columns on opposite sides of the stem
• Decussate - occurs when successsive pairs of leaves arranged in the opposite pattern are 90 degrees apart, as in Aizoaceae family

Articles:

• Phyllotaxis on Wikipedia
• Chapter 4: Phyllotaxis from Algorithmic Botany book
• Phyllotaxis on Wolfram MathWorld

Code projects:

• ofxPhyllotaxis by Davide Prati (edap)

Videos:

• Coding Challenge #30: Phyllotaxis by Daniel Shiffman