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Angiosperm Morphology: Lactifers in Ficus Vascular Bundles

cross section: Ficus leaf

magnification: 400x

 

Berkshire Community College Bioscience Image Library

 

Embedded in the mesophyll are vascular bundles of varying sizes. The bundles are closed, collateral and wrapped in clear parenchymatous bundle sheaths. Xylem occurs to the upper or adaxial surface and phloem to the lower or abaxial surface.

 

In larger vascular bundles patches of supported sclerenchyma occur above the xylem and below the phloem. Abundant dark staining lactifers produce latex like substances.

 

Vascular bundles of the petiole and midvein are leptocentric with a ring of xylem surrounding central phloem.

 

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Uploaded on August 13, 2017
Taken on February 10, 2014