noun
- A layer of cells in a plant embryo or growing tip that gives rise to a specific tissue or organ system.
Usage: botany; technical
Examples
- The dermatogen is the histogen that develops into the epidermis of the plant.
- Plant biologists study the histogens in the root apical meristem to understand tissue differentiation.
- The periblem, one of the three primary histogens, forms the cortex of the root.
- During embryonic development, the histogen cells begin to specialize into different tissue types.