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Webster 1913 Edition

Noun.

(Bot.)

Any one of several orchidaceous plants which have only two leaves, as the species of

Listera

and of

Liparis

[Written also

twyblade

twayblade ‎(plural twayblades)

Any of several orchids, of the genera Lipara^=> and Listera, that have a pair of basal leaves.

orchid of the genera Lipara or Listera that has a pair of basal leaves