Leaf Axil The angle formed between a plumeria stem and the upper side of a leaf or petiole; this area often contains buds or growth points. Synonyms: Axillary Bud Zone, Growth PointRelated Articles: Glossary: Leaf BudEarly stage of leaf growthGlossary: Leaf Node RotThe area of the stem that bears a leaf or a branch. A joint where leaves, roots, branches, or stems arise.