The term 'Royal Fern' is a common name for the species Osmund, which is a genus of ferns in the family Osmundaceae. It is native to temperate regions of the Northern Hemisphere and is found in moist woodlands, swamps, and bogs. The fronds of the Royal Fern are large and feathery, and the plant can reach heights of up to two meters. It is an important food source for many animals, and its spores are used in traditional medicine.