Corynaea crassais a root hemiparasitc plant infrequent in nature. There is little information regarding their natural history, in particular their host range. In this study we dig 32 tubers and followed their parasitized roots to determine the species host. We found Bocconia frutescens(Papaveraceae), Verbesinasp. (Asteraceae), Cayaponiasp. (Cucurbitaceae) y Palicoureasp. (Rubiaceae) as natural hosts of C. crassa. This is the first host record available for C. crassaand provides some bases for its conservation in natural habitats.
