- flowering fern, osmund - any fern of the genus Osmunda: large ferns with creeping rhizomes; naked sporangia are on modified fronds that resemble flower clusters
--1 is a kind of fern
--1 is a member of genus Osmunda
--1 has particulars:royal fern, royal osmund, king fern, ditch fern, French bracken, Osmunda regalis; interrupted fern, Osmunda clatonia; cinnamon fern, fiddlehead, fiddlehead fern, Osmunda cinnamonea