corallorhiza

from The Century Dictionary.

• noun A small genus of plants, natural order Orchidaceæ, consisting of brown or yellowish leafless herbs, parasitic on roots, and found in shady woods in the northern hemisphere.

from the GNU version of the Collaborative International Dictionary of English.

• noun a genus of leafless root-parasitic orchids having small purplish or yellowish racemose flowers with lobed lips; it is widely distributed in temperate regions.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun genus of leafless root-parasitic orchids having small purplish or yellowish racemose flowers with lobed lips; widely distributed in temperate regions