Parasitic/mycotrophic plants

Up on the hill this morning in a failed effort to pick blackcaps. What I found instead was a profusion of American cancer-root (Conophilus americana - photo below) and also Indian pipe (Monotropa uniflora). The former is a root parasite, especially on oaks. The latter is a mycotrophic plant, deriving its nutrition indirectly from the trees through mycorrhizal fungi associated with the trees' roots.