Synonyms for Onoclea Struthiopteris (same or very similar meaning)
WordNet sense 1 (tall fern of northern temperate regions having graceful arched fronds and sporophylls resembling ostrich plumes):
fiddlehead, ostrich fern, Matteuccia struthiopteris, Pteretis struthiopteris, shuttlecock fernFrom the ODE community, based on WordNetadd/edit