Definition that contains osmunda
- osmund any fern of the genus Osmunda: large ferns with creeping rhizomes; naked sporangia are on modified fronds that resemble flower clusters
- todea a genus of delicate ferns belonging to the family Osmundaceae
- flowering fern any fern of the genus Osmunda: large ferns with creeping rhizomes; naked sporangia are on modified fronds that resemble flower clusters
- genus osmunda type genus of the Osmundaceae
- genus todea a genus of delicate ferns belonging to the family Osmundaceae