Parastichy

Parastichy, in phyllotaxy, is the spiral pattern of particular plant organs on some plants, such as areoles on cacti stems, florets in sunflower heads and scales in pine cones.^[1] These spirals involve the insertion of a single primordium.^[2]

See also

• Embryology
• Fibonacci number § Nature
• Gerrit van Iterson
• Golden ratio § Nature
• Phyllotaxis

References

External links

• Smith College, Spiral Lattices & Parastichy
• Interactive Parastichies Explorer

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Patterns in nature

Patterns

• Crack
• Dune
• Foam
• Meander
• Parastichy
• Phyllotaxis
• Soap bubble
• Symmetry
  • in crystals
  • Quasicrystals
  • in flowers
  • in biology
• Tessellation
• Vortex street
• Wave
• Widmanstätten pattern

Causes

• Pattern formation
• Biology
  • Natural selection
  • Camouflage
  • Mimicry
  • Sexual selection
• Mathematics
  • Chaos theory
  • Fractal
  • Logarithmic spiral
• Physics
  • Crystal
  • Fluid dynamics
  • Plateau's laws
  • Self-organization

People

• Plato
• Pythagoras
• Empedocles
• Fibonacci
  • Liber Abaci
• Adolf Zeising
• Ernst Haeckel
• Joseph Plateau
• Wilson Bentley
• D'Arcy Wentworth Thompson
  • On Growth and Form
• Alan Turing
  • The Chemical Basis of Morphogenesis
• Aristid Lindenmayer
• Benoît Mandelbrot
  • How Long Is the Coast of Britain? Statistical Self-Similarity and Fractional Dimension

Related

• Pattern recognition
• Emergence
• Mathematics and art

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