- A tissue produced inwardly by the cork cambium.
- The innermost parenchymatous tissue regarding the periderm of some flowers
- A layer of green parenchimatous cells created on inner side of the phellogen.
- A definite level of green parenchymatous cells beneath the cork, created from the inner layers associated with phellogen. Phelloderm could be demonstrated within the stems of Ribes, Lonicera, Spiræa, Deutzia, etc.