Lenticels

Lenticels are found most commonly on trees, as the dots and lines on the bark. Notice the horizontal lines on the section of wood on the table; those are lenticels. Lenticels may also occur on roots and fruits. The small dots on the skins of apples and pears are lenticels.

On some trees, such as sycamore and paper birch, the outer layers of bark regularly peel off the tree. New lenticels then develop in the freshly exposed bark. Some trees have bark that remains on the tree, but is very thick and had deep furrows in it, and here the lenticels occur at the bottom of the furrow, closest to the living tissues of the trunk.

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More on Lenticels:

UCLA Botany Lenticel Page - **Be sure to look at the images associated with this page!**