Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun The arrangement of leaves on a stem.
from The Century Dictionary.
- noun In botany, the distribution or arrangement of leaves on the stem; also, the laws collectively which govern such distribution.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun botany The arrangement of
leaves on astem , or the mathematical principles governing such arrangement.
Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
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Examples
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The ancestral state in other characters is equivocal: e.g., bisexual vs. unisexual flowers, whorled vs. spiral floral phyllotaxis, presence vs. absence of tepal differentiation, anatropous vs. orthotropous ovules.
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A connection between mathematics and the prior topic of vegetables: Fractal food - "Self-Similarity on the Supermarket Shelf" - John Walker's new Fourmilab page on the lovely Romanesco broccoli (an excellent example of phyllotaxis).
Reconstructing the unicorn Ray Girvan 2005
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The leaves, which are spirally arranged with phyllotaxis
Chapter 11 1987
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The leaves are spirally arranged, phyllotaxis 2/5, and may be green or purple, with or without hairs and also showing a great variation in form.
Chapter 24 1987
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Leaves are spirally arranged along the stems with phyllotaxis 2/5; they may be shouldered, toothed, entire, deeply cleft or variously lobed and the petioles vary in length, thickness and degree of erectness.
Chapter 30 1987
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Almanac, and had applied his knowledge to a theory about the optimal arrangement of leaves around the stems of plants (phyllotaxis) to obtain maximum ex - posure to air and sunlight.
PRAGMATISM PHILIP P. WIENER 1968
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This will be the more readily conceded when it is remembered that the phyllotaxis of leaves not unfrequently varies on different branches of the same individual tree, and that a similar variation in the flower would at once disturb the customary alternate arrangement.
Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants Maxwell T. Masters
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The law of phyllotaxis, like that of the elastic curve, is carried out in time as well as in space.
The Atlantic Monthly, Volume 05, No. 30, April, 1860 Various
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Alex and Karl could experience the excitement of finding out a law which everyone knows now, the neat uncrowded arrangement of leaves called phyllotaxis?
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Four quadrangular scales in mutual contact represent the condition of definite phyllotaxis.
The Genus Pinus George Russell Shaw 1892
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