lamina is the expanded portion or blade of a
leaf and it is an
above-ground organ specialized
for photosynthesis. For this
leaf is typically, to a greater or
lesser degree, flat and thin, to expose the
to light over a broad area, and to
allow light to penetrate fully into
The tip of a leaf opposite to the
The boundary area
extending along the edge of the leaf.
Lobes: A partial rounded portion of a
margin, separated from the whole by a more or less deeply
vascular bundle (the
ribs) at or near the surface
that provides supports for the leaf and transports both water and food.
Adaxial or ventral surface:
is the upper surface of a leaf lamina facing toward the
or dorsal surface: of a leaf lamina is the underside or
side facing away from the stem.
shape or form of the leaf lamina is an important
used for leaf classification.
See: leaf shape