Shrub, branches covered with long appressed hairs. Leaves 4-9 x 1.5-3.5 cm, oblong, lanceolate, acuminate, sparsely pubescent above and pubescent on nerves beneath, petiole 1-2 mm, stipules subulate. Inflorescence a corymb. Calyx hairy, tube c. 2.5 mm long; 5-lobed, lobes c. 3 mm long, subulate, one is generally expanded in a yellow leaf-like structure, 1.5-3.5 x 1-2.5 cm, and stalk 1.5-2 cm long. Corolla pale yellow, tube 2-2.5 cm long, pubescent, mouth villous, 5-lobed, lobes ovate and accuminate, c. 6 x 2.5 cm; style divided into two stigmatic lobes. Fruit an oblong capsule, 7 x 5 mm, loculicidal, 2-valved.