This is the leaf-arrangement or phyllotaxy of the apple-tree, expressed by the fraction 2/5.
Phyllotaxis, or phyllotaxy, the arrangement of leaves on the stem, 67.
They are arranged densely on the branches, alternately on the 8/21 plan (see section on phyllotaxy).
In other cases the width of the leaves is determined by what botanists call the "phyllotaxy."
