phyllo-, phyll-, -phyll, -phyllous (Greek: leaf, leaves)
phyllomancy
Divination with leaves.
phyllomania
An abnormally excessive development of leaves.
phyllomorph
phyllomorphosis
phyllophorous
Leaf-bearing; producing leaves.
phyllopod
phyllorhiza
phyllosoma
phyllosphere
phyllostomatous
phyllotaxis
The order or geometric principles of arrangement of leaves (or other lateral members; such as, florets of a composite flower, scales of a pine-cone, etc.) upon an axis or stem.
The principal kinds of phyllotaxis are
- Cyclical or verticillate, in which a number of leaves (two or more) stand at the same level, forming a pair or whorl.
- Spiral or alternate, in which each leaf stands singly, with its points of insertion forming a spiral (the genetic spiral) around the stem.
In the latter case, the phyllotaxis is expressed by a fraction denoting the angle (or portion of one turn of the spiral) between two successive leaves; thus, in a 25 phyllotaxis, there are five leaves in every two turns of the spiral.
phyllotaxy
1. The arrangement of the leaves on the stem.
The three common positions are alternate, opposite, and verticillate.
2. The principles governing leaf arrangement.
When spiral, often expressed quantitatively as the fraction of the circumference of the stem that separates two successive leaves. phylloxanthin
Phylloxera
phyllozooid
Free-swimming larva of certain crustaceans including the spiny lobster and sea-crayfish.
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