phloem produced to the exterior of the vascular cambium during secondary growth.

secondary phloem (Wikipedia)
Phloem (orange) transports products of photosynthesis to various parts of the plant.
Cross-section of a flax plant stem:

Phloem (/ˈfl.əm/, FLOH-əm) is the living tissue in vascular plants that transports the soluble organic compounds made during photosynthesis and known as photosynthates, in particular the sugar sucrose, to parts of the plant where needed. This transport process is called translocation. In trees, the phloem is the innermost layer of the bark, hence the name, derived from the Greek word φλοιός (phloios) meaning "bark". The term was introduced by Carl Nägeli in 1858.

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