Synonyms for Hart's-tongue Fern (same or very similar meaning)
WordNet sense 1 (tropical American terrestrial fern with leathery lanceolate fronds; sometimes placed in genus Polybotrya):
hart's-tongueWordNet sense 2 (common epiphytic or sometimes terrestrial fern having pale yellow-green strap-shaped leaves; Florida to West Indies and Mexico and south to Uruguay):
cow-tongue fernFrom the ODE community, based on WordNetadd/edit