Osmunda clatonia

Definitions of Osmunda clatonia
  1. noun
    North American fern having tall erect pinnate fronds and a few sporogenous pinnae at or near the center of the fertile fronds
    synonyms: interrupted fern
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    type of:
    flowering fern, osmund
    any fern of the genus Osmunda: large ferns with creeping rhizomes; naked sporangia are on modified fronds that resemble flower clusters
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