Synonyms for Flowering Fern (same or very similar meaning)
WordNet sense 1 (Australasian fern with clusters of sporangia on stems of fertile fronds):
Helminthostachys zeylanicaWordNet sense 2 (any fern of the genus Osmunda: large ferns with creeping rhizomes; naked sporangia are on modified fronds that resemble flower clusters):
osmundFrom the ODE community, based on WordNetadd/edit