- twayblade, Listera ovata - orchid having a pair of ovate leaves and a long slender raceme of green flowers sometimes tinged red-brown; Europe to central Asia
--1 is a kind of orchid, orchidaceous plant
--1 is a member of Listera, genus Listera - twayblade - an orchid of the genus Liparis having a pair of leaves
--2 is a kind of orchid, orchidaceous plant
--2 is a member of genus Liparis