Vine or scrambling shrub. Leaves shining, dark green above. Calyx subulate, purplish outside, elongating to c. 1.2 cm after anthesis. Flowers fragrant. Corolla tube 1.8-2.2 cm long, ± greenish-purple; lobes 1.8-2.2 x 0.3-0.4 cm, linear, white except for dark purple markings outside on some lobes. Stigma shortly exserted.