Noun | 1. | Psychopsis - epiphytic orchids of Central and South America formerly included in genus Oncidium liliopsid genus, monocot genus - genus of flowering plants having a single cotyledon (embryonic leaf) in the seed family Orchidaceae, orchid family, Orchidaceae - enormous cosmopolitan family of perennial terrestrial or epiphytic plants with fleshy tubers or rootstocks and unusual flowers butterfly orchid - any orchid of the genus Psychopsis: spectacular large tiger-striped orchids |