Rootstock producing fibrous roots. Stems fleshy, twining and climbing, several to many metres in length, sparsely branched, tuberculate, shiny, greyish, mottled with olive-green, glabrous. Leaves rudimentary, sessile, triangular or subcordate, ±2,5 x 3 mm. Flowers 1-2 together, opening in succession on short peduncle; pedicels ±8 mm long. Sepals ovate-lanceolate, 2 mm long. Corolla about 50 mm long, curved, glabrous, mottled grey and speckled with purple at apex; tube with small white ring at base within, inflated at base and gradually narrowed to about the middle, then expanded to funnel-shaped mouth, pilose within base and at mouth; lobes free, opening star-like from above, ciliate, each appearing like a donkey's ear, overall about 20 mm diam. Corona: outer series cup-shaped, forming 5 deep pockets with outer margin 2-toothed and sometimes with a smaller one between, with long, white hairs within and on margin; inner lobes arising from within base of outer tube, incumbent-erect-spreading, with 2 brown stripes from base. Follicles ±100 mm long, spreading-curved, thinly tuberculate; stigmas becoming knob-like.
