phelloderm

A scientist examines the phelloderm layer of a tree trunk under a microscope.

Definition

1. Noun:
   • Botany: "phelloderm" refers to a layer of living cells formed by the cork cambium (phellogen) on the inner side of the bark in woody plants. It is part of the periderm, which replaces the epidermis during secondary growth.

Usage Examples

• (A scientific description of the tissue's cellular structure.)
• (A practical observation for identifying plant tissues.)

Advanced Usage

• "phelloderm formation": the process by which the cork cambium produces new phelloderm cells toward the inside of the stem.

  • Phelloderm formation is typically more limited than cork production in many tree species. (A comparison of growth patterns in bark layers.)

• "primary phelloderm": the first layers of phelloderm formed during the initial development of the periderm.

  • The primary phelloderm is often thinner and less distinct than later layers. (A technical distinction in plant anatomy.)

Variants and Related Words

• Phellogen (n): the cork cambium, the meristematic tissue that produces phelloderm and cork.

  • The phellogen divides to form cork cells outward and phelloderm cells inward. (The source of both bark layers.)

• Periderm (n): the protective outer layer of stems and roots, composed of cork, phellogen, and phelloderm.

  • The periderm replaces the epidermis as the plant ages. (A broader term for the bark's protective tissues.)

Synonyms

• Cork parenchyma: a descriptive term for the living, parenchymatous cells of the phelloderm.
• Inner bark: in some contexts, the phelloderm is included in the inner bark, though this term also includes phloem.

Related Idioms

• (None applicable; "phelloderm" is a technical botanical term without idiomatic usage in everyday language.)