bird's-nest orchid

a brown parasitic Eurasian orchid, Neottia nidus-avis , whose thick fleshy roots resemble a bird's nest and contain a fungus on which the orchid feeds

a parasitic Eurasian plant, Monotropa hypopitys , whose thick fleshy roots resemble a bird's nest and contain a fungus on which the plant feeds: family Monotropaeceae