twayblade

from WordNet (r) 3.0 (2006)

twayblade
    n 1: orchid having a pair of ovate leaves and a long slender
         raceme of green flowers sometimes tinged red-brown; Europe
         to central Asia [syn: {twayblade}, {Listera ovata}]
    2: an orchid of the genus Liparis having a pair of leaves

from The Collaborative International Dictionary of English v.0.48

Twayblade \Tway"blade`\, n. (Bot.)
   Any one of several orchidaceous plants which have only two
   leaves, as the species of {Listera} and of {Liparis}.
   [Written also {twyblade}.]
   [1913 Webster]

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