Leaf gap

A leaf gap is a space in the stem of a plant through which the leaf grows. The leaf is connected to the stem by the leaf trace, which grows through the leaf gap.

The leaf gap is a break in the vascular tissue of a stem above the point of attachment of a leaf trace.^[1] It exists in the nodal region of the stem as a "gap in the continuity of the primary vascular cylinder above the level where a leaf trace diverges toward a leaf. This gap is filled with parenchyma tissue".^[2]

References

1. answers.com
2. Little, R. John; Jones, C. Eugene, eds. (1980). A Dictionary of Botany. New York: Van Nostrand Reinhold Company. p. 200. ISBN 0-442-24169-0.