Term:
Velamen
Velamen
Definition:
A spongy covering of one or two layers of cells derived from the epidermis and surrounding the roots of Orchidaceae and Araceae. The velamen is usually white and functions to absorb mineral-rich water when it rains.
A spongy covering of one or two layers of cells derived from the epidermis and surrounding the roots of Orchidaceae and Araceae. The velamen is usually white and functions to absorb mineral-rich water when it rains.