A genus of stemless, leafless plants, living parasitically upon the roots and stems of grapevines in Malaysia. The flowers have a carrionlike odor, and are very large, in one species (Rafflesia Arnoldihaving a diameter of two or three feet.
Any of several large parasitic plants, of the genus Rafflesia, from South East Asia, that have no roots, stems or leaves; Rafflesia arnoldii has the largest known flower with a diameter of over a yard.