osmunda

noun

Any of several ferns of the genus Osmunda, such as the cinnamon fern, having bipinnately compound sterile fronds and separate spore-bearing fertile fronds. The fibrous roots are used as a potting medium.

noun

A genus of handsome ferns, widely distributed throughout north temperate regions, and typical of the order Osmundaceæ.

noun

royal fern, osmund (of genus Osmunda)