protonemal
/ˌproʊtəˈniːməl/
adjective
- Relating to the protonema, the first stage of growth in mosses and liverworts, consisting of a thread-like structure.
- Botany students studied the protonemal development in their lab experiment.
- The protonemal stage of the moss is often overlooked by casual observers.
- Under the microscope, the protonemal filaments were clearly visible.