Angiosperm Leaf: Midrib Vascular Bundle in Nerium
cross section: Nerium leaf
common name: Oleander
magnification: 400x
Berkshire Community College Bioscience Image Library
Vascular bundles of the blade and midrib and smaller are closed and collateral with xylem towards the adaxial surface and phloem towards the abaxial surface. All vascular bundles are surrounded by parenchymatous bundle sheaths. The mid rib vascular bundle is large with a nearly continuous ring of supportive sclerenchyma, overlaid by storage parenchyma and further reinforced by masses of subepidermal collenchyma. All these tissues are particularly well developed towards the abaxial surface.
Collenchyma does not extend throughout the leaf blade except for small zones at leaf tips.
Technical Questions:bioimagesoer@gmail.com
Angiosperm Leaf: Midrib Vascular Bundle in Nerium
cross section: Nerium leaf
common name: Oleander
magnification: 400x
Berkshire Community College Bioscience Image Library
Vascular bundles of the blade and midrib and smaller are closed and collateral with xylem towards the adaxial surface and phloem towards the abaxial surface. All vascular bundles are surrounded by parenchymatous bundle sheaths. The mid rib vascular bundle is large with a nearly continuous ring of supportive sclerenchyma, overlaid by storage parenchyma and further reinforced by masses of subepidermal collenchyma. All these tissues are particularly well developed towards the abaxial surface.
Collenchyma does not extend throughout the leaf blade except for small zones at leaf tips.
Technical Questions:bioimagesoer@gmail.com