Erayga "Brike Cliff" waxaa loola jeedaa nooc ka mid ah fern ka tirsan genus Pellaea, oo sida caadiga ah laga helo degaannada dhagaxa ah ama dhagaxa. Waxa kale oo loo yaqaanaa Bareegga Dhagaxa ama fern-ka Cliffbrake. Erayga "dhagax" waxaa loola jeedaa dhulka dhagaxa ah ama dhererka leh ee ay fernsyadani u muuqdaan inay koraan, halka "brake" uu yahay erey Ingiriis ah oo hore oo guud ahaan macneheedu yahay kayn ama xayndaabka ferns. Sidaa darteed, "Brike Cliff" macneheedu waxa weeye "Fern ka soo baxa dhagaxyada."