On the Relation of Phyllotaxis to Mechanical Laws, London, 1904.
Professor Alexander Dickson has examined the phyllotaxis of Lepidodendrons, and gives the following results of his observations (Trans.
From the above it is evident that the phyllotaxis of Lepidodendron is extremely variable, as much so perhaps as that of those most variable plants, in this respect, the Cacti.
Therefore phyllotaxis furnishes another distinction between the two sections of the genus, but its further employment is exceedingly restricted on account of the constant repetition of the same orders among the species.
Most of the scales of a cone are in indefinite phyllotactic relation, while definite phyllotaxis is found only at points on the cone.
If the cone is conical, definite phyllotaxis would be possible among all the scales only when the size of the scales diminishes in equal measure with the gradual diminution of the cone's diameter.
Cones with a dorsal umbo, the phyllotaxis complex.
Diagram of a phyllotaxisrepresented by the fraction 2/5.
It has been found in general that, while the number 5 occurs in the phyllotaxis of Dicotyledons, 3 is common in that of Monocotyledons.
The angle of divergence may alter either abruptly or gradually, and the phyllotaxis thus becomes very complicated.
In the bud of the screw-pine the leaves are arranged in three orthostichies with the phyllotaxis 1/3, but by torsion the developed leaves become arranged in three strong spiral rows running round the stem.
In different species of the same genus the phyllotaxis frequently varies.
Although we are not quite sure how Dr Falconer in tends to apply the law of phyllotaxis to illustrate his idea, we fancy that a pertinent illustration may be drawn from it in this way.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "phyllotaxis" in a variety of sentences. We hope that you will now be able to make sentences using this word.
