noun
- a thin brown scale found on fern fronds and stems
Usage: botanical
Examples
- The botanist carefully examined the ramentum on the fern’s stem.
- Ramentum helps protect young fern fronds as they develop.
- The presence of ramentum is an important identifying feature in fern classification.
- Under the microscope, the ramentum appeared as delicate, hair-like scales.
- Many tropical ferns have distinctive ramentum patterns on their stems.