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phyllotaxy

Examples

  • In botany, phyllotaxis or phyllotaxy is the arrangement of the leaves on the stem of a plant. documentation/demo/phyllotaxy.txt · Last modified: 2007/10/30 19:30 by user Back to top. — “documentation:demo:phyllotaxy - OpenAlea”, openalea.gforge.inria.fr
  • Collaborative Poster Project. — “Squared Circle Poster”,
  • This observation call attention to the fascinating, naturally occurring mathematical phenomena: leaf phyllotaxy and the Fibonacci numbers. Leaf phyllotaxy explains how leaves are arranged on the twig, why they are opposite, whorled or alternate:. — “Twig and Leaf Phyllotaxy”, ct-botanical-
  • PHYLLOTAXY AND FIBONACCI. by Ken Gohring and Jim Smith. About 300 years before Columbus discovered America, another Italian simplest phyllotaxy - 1/2. The 1/3 type is characteristic of alders, while the 2/5 type is. found in oaks and many other trees. — “PHYLLOTAXY AND FIBONACCI by Ken Gohring and Jim Smith”,
  • Definition of phyllotaxy from The American Heritage Science Dictionary. — “phyllotaxy - Science Definition”,
  • Definition of phyllotaxy from Webster's New World College Dictionary. Meaning of phyllotaxy. Pronunciation of phyllotaxy. Definition of the word phyllotaxy. Origin of the word phyllotaxy. — “phyllotaxy - Definition of phyllotaxy at ”,
  • Phyllotaxy is the arrangement of leaves on a stem. As a stem grows at its apex, new leaf buds form along the stem by a highly controlled developmental process. This pattern is often called spiral phyllotaxy because a spiral is formed when an imaginary line is drawn which connects. — “Leaf - Phyllotaxy - Leaves, Stem, Theory, Spiral, Nodes, and”,
  • Knowledge Repository > MSUE Root KR Domain > Biological Sciences > biology > anatomy and morphology > plant morphology > phyllotaxy Resources in phyllotaxy: No resources available for this category. — “phyllotaxy”, msue.msu.edu
  • Definition of phyllotaxy in the Online Dictionary. Meaning of phyllotaxy. Pronunciation of phyllotaxy. Translations of phyllotaxy. phyllotaxy synonyms, phyllotaxy antonyms. Information about phyllotaxy in the free online English dictionary and. — “phyllotaxy - definition of phyllotaxy by the Free Online”,
  • Phyllotactic definition, the arrangement of leaves on a stem or axis. See more. phyllotaxy or phyllotaxy (ˌfɪləˈtæksɪs, -ˈtæksiːz) —n. phyllo'tactic or phyllotaxy. —adj. Collins English Dictionary - Complete & Unabridged 10th Edition. 2009 © William Collins Sons & Co. Ltd. 1979, 1986. — “Phyllotactic | Define Phyllotactic at ”,
  • When the opposite leaves arise in the same plane at successive nodes, it is said to be opposite superposed phyllotaxy. e.g., Quisqualis. When each opposite pair of leaves are at right angles to each other, phyllotaxy is said to be opposite decussate. e.g., Calotropis Ixora. Whorled Phyllotaxy. — “Phyllotaxy - Angiosperm Morphology | ”,
  • One of the most fascinating aspects of plant morphology is the regular geometric arrangement of leaves and flowers, called phyllotaxy. The shoot apical meristem (SAM) determines these patterns, which Full Text Available. UK PubMed Central (United Kingdom) 3. — “phyllotaxy: Topics by ”,
  • afghani whorled phyllotaxy: one of two mutants out of 5 afghani (f2) beans The photo "afghani whorled phyllotaxy" was uploaded by sarah louise into the category "Miscellaneous" in January 2008. — “afghani whorled phyllotaxy photo " Cannabis Photo Gallery”,
  • In whorled phyllotaxy, discrete. leaf initiation cycles occupy the whole circumference of the. meristem and produce a set number of leaf primordia per whorl. When a single leaf is initiated per whorl, the pattern is alternate. or distichous, and when two leaves are initiated per whorl the. — “abphyl1 and phyllotaxy in maize”, jacksonlab.cshl.edu
  • phyllotaxy. Definition from Wiktionary, the free dictionary. Jump to: navigation, search This page was last modified on 31 January 2010, at 13:37. Text is available under the Creative Commons Attribution/Share-Alike. — “phyllotaxy - Wiktionary”,
  • Phyllotaxy, Or Leaf-Arrangement. 220. As the position of the leaf upon the stem marks the position on the exillary bud, it follows that the order of The careful investigation of this subject has developed a science of unexpected exactness and beauty, called phyllotaxy (øvλλov, a leaf, τύξĮς, order. — “Phyllotaxy, Or Leaf-Arrangement”,
  • In botany, phyllotaxis or phyllotaxy is the arrangement of leaves on a plant stem (from Ancient Greek phyllo-, leaf; -taxis, motion/orientation) In an opposite pattern, two leaves grow in opposite directions from the same node. — “Phyllotaxis - Wikipedia, the free encyclopedia”,
  • The Botanic Garden of Smith College, Northampton, MA. Includes the Lyman Conservatory and Photo Gallery. Using the Botanic Garden plant collections, students gather data on phyllotaxy (the arrangement of leaves on a stem) and examine proposed phyllotaxy models. — “The Botanic Garden of Smith College, Curricular Enhancement”, smith.edu
  • phyllotaxy also phyllotaxis n. , pl. , -taxies , also -taxes . The arrangement of leaves on a stem Crisscrossing spirals found in nature. In botany, phyllotaxis or phyllotaxy is the arrangement of leaves on a. — “phyllotaxy: Definition from ”,
  • common name, scientific name, leaf shape, leaf type, venation, margin, phyllotaxy of the following: talisay santol san francisco gumamela rosal mango achuete lanzones nymph tree sampaloc pandan atis balete langka narra ampalaya papaya kamias. — “About data on leaves? common name, scientific name, leaf”,
  • The phyllotaxy is the number of spiral turns between two leaves in Thus, a plant with alternating leaves having two orthostichies would have a phyllotaxy of ½. If three orthostichies, the phyllotaxy would be 1/3. Fabonacci's number the Golden Rectangle. There are three distinct phases in the. — “Why do we think that a flowering stimulus is involved”, tgers.edu
  • A. phyllotaxy - the arrangement of leaves on the stem. 1. alternate abscission guard cell petiole adaxial hydrophyte phyllotaxy apex internode pinnate blade leaf primordium. — “Biol 1A - Lecture 18”, ucmp.berkeley.edu

Images

  • oval leaflets numbering 23 or a few less The phyllotaxy is reminiscent of many eucalyptus branches whose opposite leaf pairs acquire a quarter turn between pairs In the case of the tipu tree this quarter turn twists the leaflet pairs into the same plane The leaflets are slightly paler below Meanwhile the bright yellow flowers produce 3 inchlong by 1 inch
  • Smilacina false Solomon s seal This is a good example of alternate phyllotaxy Each new leaf emerges on the opposite side of the shoot at the next node
  • afghani whorled phyllotaxy JPG
  • Perfect example for the Fibonacci series in nature this one is emerging on an opening <i>Echinacea< i> bud
  • stems is called phyllotaxy or leaf arrangement Different groupings most commonly alternate opposite and whorled leaf arrangements are found throughout the plant world
  • Photo Post Via Jun200のたんぶらー jun200
  • and germination pattern in sect Macrolespedeza Even in L Buergeri Fig 32E the phyllotaxy in the seedling stage is spiral although the phyllotaxy is distichous in the adult stage In the section Lespedeza more diversification in seedling morphology was observed L cuneata its allies L juncea and L inschanica and L virgata have seedlings like those of species
  • a complete meristem results in an incipient meristem at the base of the leaf to develop Thus growing meristems inhibit the growth of nearby ones Leaf positioning phyllotaxy involves lateral inhibition and often produces a helical pattern of leaves on a stalk Root tissues are produced from root apical meristems by a highly sterotypical
  • Proof of concept for Squared Circle Poster idea Generated algorithmically in Flash This arrangement similar to the optimal way sunflower seeds are packed holds 2600 circles the approximate size of the current photo pool at the time I generated this I suggested that the photos could be arranged by average color luminence to produce various kinds of visual patterns as in <a href= http krazydad com bestiary bestiary phyllotaxy html >this Flash experiment< a> A <a href= http www flickr com photos krazydad 3567678 >preliminary test image< a> was produced a couple of days later
  • Proof of concept for Squared Circle Poster Fibonacci idea Generated algorithmically in Flash This arrangement similar to sunflowers pinecones and other arrangements from nature holds 200 circles <a href= http www flickr com photos krazydad 3490668 >Here is another version< a> that shows would it look like to fit ALL the photos in the pool It would be possible to arrange the photos by average color luminence to produce various kinds of visual patterns as in <a href= http krazydad com bestiary bestiary phyllotaxy html >this Flash experiment< a>
  • Final tile layout There are 1099 images from the squared circle group in this mosaic They are all licensed and have been selected as a favorite at least once I have placed some of the more popular favorites around the rim Otherwise the images are arranged by color with highly saturated bright colored images in the center <a href= http www krazydad com squaredcircle phyllo php rel= nofollow >Attributions for this poster< a> <a href= http www krazydad com squaredcircle phyllo closeup html rel= nofollow >A mapped version click on a tile< a>
  • Crassula arborescens This succulent exhibits decussate phyllotaxy
  • meristem Removal of a complete meristem results in an incipient meristem at the base of the leaf to develop Thus growing meristems inhibit the growth of nearby ones Leaf positioning phyllotaxy involves lateral inhibition and often produces a helical pattern of leaves on a stalk Root tissues are produced from root apical meristems by a highly sterotypical pattern of
  • the number of clockwise spirals These also turn out to be Fibonacci numbers In some cases the numbers appear to be multiples of Fibonacci numbers because the spirals consist of whorls Leonardo da Vinci was the first to suggest that the adaptive advantage of the Fibonacci pattern is to maximize exposure to dew Current thinking supports this interpretation Phyllotactic
  • Lecture Handouts roottype jpg D Root and Stem Structures Lecture Handouts rootandstem jpg E Leaf types venation and phyllotaxy Lecture Handouts leaftype jpg F Leaf structure and water transport Lecture Handouts leafandwater jpg G Food transport
  • Lecture Handouts rootandstem jpg E Leaf types venation and phyllotaxy Lecture Handouts leaftype jpg F Leaf structure and water transport Lecture Handouts leafandwater jpg G Food transport Lecture Handouts foodtransport jpg VI Week 6
  • Click Here to see image Legend Costus Costaceae with spiral leaf pattern Keywords phyllotaxy growth pattern Click Here to see image Legend Frithia Crassulaceae with window leaves Keywords window leaves modified leaves CAM metabolism
  • I was sure with the unusual ring of leaves this should be easy to find in my wildflower field guide but alas so far I ve had no luck These were fairly tall 2 3 feet at least and growing among other wildflowers such as yarrow ragwort and the omnipresent kudzu along the Blue Ridge Parkway Western North Carolina The flowers were smallish maybe half an inch in diameter Does anyone have an idea what these might be Update This looks to be <i>Euphorbia corollata< i> flowering spurge I was able to revisit the location and have another look The plants are definitely Euphorbs as they are oozing white sap if you break them Common names for this plant include Purging Root and Go Quick which hints at its medicinal use According to my field guide it was reported by a doctor in the 1800s to quot undoubtedly rank amongst the most efficient medicines of the evacuating class quot Be careful with it though the white sap is a skin irritant and may even cause blistering The quot flowers quot on this plant are actually false flowers check out a <a href= http www flickr com photos blueridgekitties 4692611750 >close up< a> for more detail
  • to see image Legend Aristolochia Aristolochiaceae dutchman s pipe vine stem apex l s Keywords alternate phyllotaxy primordia shoot apical meristem surface hairs leaf traces Click Here to see image Legend Transpiration Open and Closed Stoma Keywords transpiration stoma
  • Projects Five | Regulation of phyllotaxy in maize by ABPHYL1 The abphyl1 mutation affects the geometric pattern of leaf initiation leading to
  • Mutant individual showing spiral phyllotaxy Copyright 2006 Rick Ree Edit image
  • Click Here to see image Legend Fishhook cactus showing spiral phyllotaxy of the areoles Keywords spines modified leaves spiral phyllotaxy areoles succulent stem Click Here to see image Legend Lupinus Fabaceae lupine palmately compound leaves Keywords palmately compound leaves legume
  • meristem Removal of a complete meristem results in an incipient meristem at the base of the leaf to develop Thus growing meristems inhibit the growth of nearby ones Leaf positioning phyllotaxy involves lateral inhibition and often produces a helical pattern of leaves on a stalk Root tissues are produced from root apical meristems by a
  • First Fibonacci Poster test Because this is one of the first mosaics I posted I won t be counting the 38 votes it received before Feb 1st <a href= http www krazydad com posters >More info about Flickr Collaborative posters< a>
  • leaflets of palmately compound leaves arise from the terminal end of the petiole This gives the appearance of fingers emanating from the palm of a hand Phyllotaxy Phyllotaxy refers to the arrangement of leaves on the stem There are three basic types of leaf arrangement alternate opposite and whorled Trees with alternate arrangement
  • patterning phyllotaxy apical dominance embryo development and patterning organ initiation organ shape and size cell fate specification cell division and expansion1
  • Click Here to see image Legend Ananas comosus Bromeliaceae pineapple fruit Keywords multiple fruit phyllotaxy alternate or spiral food crop Click Here to see image Legend Botrychium Ophioglossales grape fern root apex l s Keywords roots quiescent zone root cap ferns protostele root apical meristem
  • flower head showing pattern of disk and ray flowers Keywords growth patterns development phyllotaxy composite ray flowers disk flowers head receptacular bracts involucral bracts Click Here to see image Legend Phoradendron scaceae mistletoe growing on oak Keywords modular growth parasitism haustoria nutrition
  • side of the Big Burro Mountains 22 Sep 2007 The well developed axillary leaves giving the impression of whorled rather than opposite phyllotaxy are characteristic of this species Plant habit Burro Spring Canyon 22 Sep 2007 Go back to SW Plants
  • 2 jpg
  • Here to see image Legend Prunus serotina Rosaceae wild black cherry young stems with leaves Keywords alternate phyllotaxy growth patterns entire leaves cyanogenic glycosides Click Here to see image Legend Coleus Lamiaceae leaves showing decussate phyllotaxy Keywords decussate phyllotaxy growth patterns opposite leaves entire leaves anthocyanins
  • A computer constructed mosaic of 5101 photos from the Squared Circle photo pool showing the circular interior of the photos only The images are arranged in a fibonacci spiral a form commonly seen in plants such as sunflowers pinecones and pineapples In this particular mosaic images with lower saturation values are relagated to the interior of the circle and given smaller radii thus emphasizing brighter colors <a href= http www krazydad com squaredcircle rel= nofollow >More info about Flickr Collaborative posters< a>
  • Mutant individual left showing spiral phyllotaxy Copyright 2007 Rick Ree Edit image
  • x phyllotaxy png
  • Click Here to see image Legend Opuntia Cactaceae young stem with caducous leaves still below areoles Keywords caducous leaves areoles spines phyllotaxy growth pattern Click Here to see image Legend Marah Cucurbitaceae with stem tendrils showing thigmotropic coiling Keywords thigmotropism stem tendrils vine palmately lobed leaves
  • main stem are not easily noticed except when they accumulate to give the main stem a curved appearance as in the image on the left where there is no rotation between successive internodes
  • and germination pattern in sect Macrolespedeza Even in L Buergeri Fig 32E the phyllotaxy in the seedling stage is spiral although the phyllotaxy is distichous in the adult stage In the section Lespedeza more diversification in seedling morphology was observed L cuneata its allies L juncea and L inschanica and L virgata have seedlings like those of species
  • Legend Coleus Lamiaceae shoot apex l s Keywords opposite phyllotaxy shoot apical meristem tunica corpus primordia procambium procambial strands protoderm ground meristem Click Here to see image Legend Ananas comosus Bromeliaceae pineapple fruit Keywords multiple fruit phyllotaxy alternate or spiral food crop
  • The fresh young tip of a hemlock branch the original was just different shades of green and I thought black and white brought out the pattern more
  • A computer constructed mosaic of 5101 photos from the Squared Circle photo pool showing the circular interior of the photos only The images are arranged in a fibonacci spiral a form commonly seen in plants such as sunflowers pinecones and pineapples In this particular mosaic images with lower saturation values are relagated to the interior of the circle and given smaller radii thus emphasizing brighter colors <a href= http www krazydad com squaredcircle rel= nofollow >More info about Flickr Collaborative posters< a>

Videos

  • Biology 1B - Lecture 36: Shoot growth - cont - and modificat General Biology
  • Millikan Oil Drop demo (SCPTA) Jeffrey Cady, show us Cal Tech Millikan oil drop lecture demo
  • Tobbaco (Nicotiana sylvestris) phyllotaxy This timelapse of N. sylvestris was recorded over 1.5 weeks. Note the clockwise alternate phyllotaxy (leaf growth/arrangement) of this plant. The leaves grow opposite to each other. This pattern does not change as the plant matures.
  • The dance of phyllotaxy The dance of phyllotaxy, filmed at Geeks vs Geeks trivia, 8/30/10 at Moon's Pub, San Mateo.
  • Holy Mysteries You will witness marvelous miracles of Islamic Religion and the Qur'an, as well as extraordinary marks of God on the Earth through this documentary completely based on scientific truths and presented by scientists. Certain subjects included in the documentary are as follows: - The Significance of the Number 1 and Creation - Golden Ratio and The Encoded Message - The Golden Ratio Point of the World - God's Hidden Name - The Enigma of the Apocalypse - The Qur'an and The Maths - Symmetric design - Words - The Secrets of the Earth and the Space - Information Given About the Future and the World - The Golden Silhouette - The Unity of Religions - İstanbul, Jerusalem and the Golden Line Miracle - Scientist and the Qur'an And many more available in this documentary...
  • Fibonacci Tunnel at MAU I built the Bamboo Fibonacci Tunnel at Musashino Art University in November 2008. Many students and staves helped to build the constructuion. Akio Hizume
  • LotusVideo2.wmv Lotus Kolam is expected to be represented for Lotus petals, and Phyllotaxy(Leafs/petal arrangement) of the leaf number of N in a circle and the repeated turning number of L, and then Divergence (Angle between 1st-2nd Petal 360 x L/N deg. arc. ) of the Phyllotaxy women use in Kolam, are approximate values. Here Kolam is drawn on N=8, M=5 and L=5 of (1,2,4,5,3,1) and then GCD(N,L)=1 as the loop number (1 means as as the unicursal. We find the Arrangement of leafs/petals, and Phyllotaxy of 5/8 and Divergence of 360x5/8 deg arc. The equal to 21/55 or the larger Fibonacci number of Phyllotaxy makes Golden ratio (0.6181) and Golden angle (360*0.6181=137.5deg), in the case of which leafs or petals are in non-repeating/infinitive periodic arrangement. The actual arrangement of Lotus petals has this condition.
  • Sunflower Tower Outdoor Installation bamboo architecture based on phyllotaxy (Golden Ratio). The music is also based on the Golden Ratio. This structure is very strong against earthquake. recorded: 3rd December 2006 (c)2006 Akio Hizume
  • Exercises in Grapevine Breeding and Genetics Dwarves, Worms, *** Change, and Bunch Rot: Exercises in Grapevine Breeding and Genetics Peter Cousins, Geneticist, USDA-ARS Grape Genetic Reources Unit, Geneva, NY Cornell University Department of Horticulture seminar series, Feb. 27, 2012 Take a grapevine, divide it into its essential parts, then pick, choose, and reassemble to develop new varieties and selections for grape growers and wine makers in New York, across the country, and around the world! Peter Cousins will discuss USDA ARS research in grape rootstock breeding, mutant dwarves, worm proofing, precocious flowering and remontant grapevines, gamma radiation, *** change--and phyllotaxy!
  • Leaf Phyllotaxy Quick glance on phyllotaxy ( arrangement of leaves on stem/branch)