Vine, climbing to 2 m (i.e. as high as host branches). Leaves shining green above, pale glaucescent beneath. Flowers pendent. Perianth with pale green tube bent back on itself; lower swollen part c. 3.5 cm long; distal part slender and c. 2 cm long. Perianth limb c. 8 x 7 cm viewed from front (facing outwards), almost semi-circular with margins curving inwards, heavily mottled dark purple and white; base cordate; circular entrance to tube with pilose hairs inside.