n. (Bot.) A fern of the genus Osmunda, or flowering fern. The most remarkable species is the osmund royal, or royal fern (Osmunda regalis), which grows in wet or boggy places, and has large bipinnate fronds, often with a panicle of capsules at the top. The rootstock contains much starch, and has been used in stiffening linen. [ 1913 Webster ]
(n) New World fern having woolly cinnamon-colored spore-bearing fronds in early spring later surrounded by green fronds; the early uncurling fronds are edible, Syn.fiddlehead, Osmunda cinnamonea, fiddlehead fern
(n) any fern of the genus Osmunda: large ferns with creeping rhizomes; naked sporangia are on modified fronds that resemble flower clusters, Syn.osmund
(n) North American fern having tall erect pinnate fronds and a few sporogenous pinnae at or near the center of the fertile fronds, Syn.Osmunda clatonia
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