what are leaf axil buds
(December 2009). The axillary bud is a bud that develops in the axil of a leaf of a plant (synonymous with lateral bud), more exactly it is actually still an embryonic shoot which lies dormantly at the junction of the stem and petiole of a plant.It arises exogenously from outer layer of cortex of the stem.ertain plant diseases-notably phytoplasmas-can cause the proliferation of axillary buds, and cause plants to become bushy in appearance.The shoots of most vascular plants branch according to a consistent plan, with each new axis arising in the angle between a leaf and a stemâthat is, in a leaf axil.