Definition of Parastichy. Meaning of Parastichy. Synonyms of Parastichy

Here you will find one or more explanations in English for the word Parastichy. Also in the bottom left of the page several parts of wikipedia pages related to the word Parastichy and, of course, Parastichy synonyms and on the right images related to the word Parastichy.

Definition of Parastichy

Parastichy
Parastichy Pa*ras"ti*chy, n. [Pref. para- + Gr. ? a row.] (Bot.) A secondary spiral in phyllotaxy, as one of the evident spirals in a pine cone.

Meaning of Parastichy from wikipedia

- Parastichy, in phyllotaxy, is the spiral pattern of particular plant organs on some plants, such as areoles on cacti stems, florets in sunflower heads...
- Detail of the saucer plant, Aeonium tabuliforme, showing the multiple spiral arrangement (parastichy)...
- 1830, Karl Friedrich Schimper and Alexander Braun discovered that the parastichies (spiral phyllotaxis) of plants were frequently expressed as fractions...
- horizontal shoots Decussation Fermat's spiral L-system Orixa ****onica Parastichy Plastochron Three-gap theorem Sphere ****ng in a cylinder φύλλον, τάξις...
- symbolism, they are closely related to the tree of life. Conifer nuts Parastichy Strobilus A pine cone covered in ice after an ice storm. Male cones of...
- separating the individual primordia, with the Fibonacci angle giving the parastichy with optimal ****ng density. Mathematical modelling of a plausible physical...
- ISBN 978-0-521-40482-2. Retrieved 2011-01-31. fibonacci ****ng efficiency. "Parastichy pair(13:21) of CYCAS REVOLUTA (male) florets_WebCite". Archived from the...
- Richards, Philos. Trans. R. Soc. London, Ser. B 235, 509 (1951). Orthostichy, Parastichy and Plastochrone Ratio in a Central Theory of Phyllotaxis v t e...
- phyllotaxis, the arrangement of leaves on a stem, and in the arrangement (parastichy) of other parts as in composite flower heads and seed heads like the sunflower...
- Doyle spiral is called a parastichy and the arm counts of the Doyle spiral are called parastichy numbers. When the two parastichy numbers p{\displaystyle...