Typical anatomy of mesomorphic dicot leaf

Dorsiventral, hypostomatous leaf

A sectional view of basswood (Tilia sp.) leaf blade. The leaf is said to be bifacial, or dorsiventral, since the two sides of the mesophyll are composed of morphologically different tissues. The leaf is hypostomatous since the stomata are only found on the abaxial surface.

1 = adaxial epidermis, 2 = palisade mesophyll, 3 = spongy mesophyll, 4 = intercellular space, 5 = xylem of minor vein (identify secondary thickenings of tracheary elements), 6 = phloem of minor vein, 7 = bundle sheath, 8 = bundle sheath extension, 9 = abaxial epidermis, 10 = stoma