noun, plural: phelloderms. (botany) A part of the periderm made up of cells produced inwardly by the cork cambium. Supplement. In woody plants, the epidermis is eventually replaced by a tougher, protective layer called bark.

What does the phelloderm do?

Phelloderm helps form, along with nonconducting (inactive) phloem area cells, a secondary cortex. In some trees this secondary cortex is a green photosynthetic layer just outside the active phloem and just inside the most interior phellogen.

What is phellogen and phelloderm?

Phellogen is defined as the meristematic cell layer responsible for the development of the periderm. ... phelloderm – inside of cork cambium; composed of living parenchyma cells. phellogen (cork cambium) – meristem that gives rise to periderm. phellem (cork) – dead at maturity; air-filled protective tissue on the outside.