One of the small, oval, rounded spots upon the stem or branch of a plant, from which the underlying tissues may protrude or roots may issue, either in the air, or more commonly when the stem or branch is covered with water or earth
Small corky-celled structures on the surface of twigs and branches, and/or trunk of some species, whose function is to allow the transport of gases to and from the inner tissues
A pore in the stem of a woody plant, appearing as a raised spot that may be filled with a powdery substance The pore permits air to reach tissues below the surface
A small opening (either a pore or a slit) in the bark of the tree, through which the tree "breathes" air into the cambium and other living tissues of the outer trunk While all trees have lenticels, some are more easily observed on twigs and young branches (such as those of Black Cherry and River Birch) than others