"Pellaea rotundifolia" sunan kimiyya ne ga nau'in fern wanda aka fi sani da "button fern." Sunan jinsin "Pellaea" ya fito ne daga kalmar Helenanci "pellos," ma'ana mai launin duhu, kuma sunan jinsin "rotundifolia" yana nufin zagaye-zagaye. Saboda haka, sunan "Pellaea rotundifolia" yana nufin nau'in fern mai ƙananan ganye masu siffar zagaye masu launin duhu.
