corallorhiza(n = noun.plant) genus corallorhiza - genus of leafless root-parasitic orchids having small purplish or yellowish racemose flowers with lobed lips; widely distributed in temperate regions;
a genus of leafless root-parasitic orchids having small purplish or yellowish racemose flowers with lobed lips; it is widely distributed in temperate regions. [WordNet 1.5]