Oncidium papilio n 1: orchid of South America and Trinidad having large yellow and reddish-brown flowers; sometimes placed in genus Oncidium [syn: {Psychopsis papilio}, {Oncidium papilio}]
Oncidium \On*cid"i*um\, n. [NL.] (Bot.) A genus of tropical orchidaceous plants, the flower of one species of which ({Oncidium Papilio}) resembles a butterfly. [1913 Webster]