Parastichy

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File:Pflanze-Sonnenblume1-Asio.JPG
Spirals on a sunflower
File:Aeonium tabuliforme.jpg
Detail of Aeonium tabuliforme showing the multiple spiral arrangement (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

References

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  1. ^ Page Module:Citation/CS1/styles.css has no content.Webster's Revised Unabridged Dictionary. C. & G. Merriam Co. 1913.
  2. ^ Page Module:Citation/CS1/styles.css has no content.Weise, Dmitriy (1998-10-29). "Principle of Minimax and Rise Phyllotaxis". Retrieved 2008-12-14.

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