| Noun | 1. | genus Stelis - genus of small caespitose orchids of tropical America 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 stelis - any of various small tropical American orchids of the genus Stelis having long slender racemes of numerous small to minute flowers |