Synonyms for Cupflower (same or very similar meaning)
WordNet sense 1 (Mexican evergreen climbing plant having large solitary funnel-shaped fragrant yellow flowers with purple-brown ridges in the throat):
chalice vine, Solandra guttata, trumpet flowerWordNet sense 2 (any of various plants of the genus Nierembergia having upturned bell-shaped flowers):
nierembergiaFrom the ODE community, based on WordNetadd/edit