Synonyms for Fairy Cup (same or very similar meaning)
WordNet sense 1 (a scarlet European fungus with cup-shaped ascocarp):
blood cup, Peziza coccineaWordNet sense 2 (miterwort of northeastern North America usually with two opposite leaves on erect flowering stems that terminate in erect racemes of white flowers):
Mitella diphyllaFrom the ODE community, based on WordNetadd/edit