Shrub c. 1 m high. Leaves shining above and with impressed veins. Calyx lobes white, usually revolute towards margins, of diverse shape and size, often asymmetric, to c. 10 x 9 cm, including a 1 cm long claw, the larger lobe suborbicular. Corolla tube 2-2.5 cm long, very slender, pale green; limb c. 2.5 cm across the aristate lobes, deep yellow; lobes 1.2-1.3 cm long, including arista 2-3 mm long, otherwise broad ovate; midrib acute and raised; throat closed by a dense tuft of yellow hairs.