Thunbergia purpurata Harv. ex C.B.Clarke

A dark green, herbaceous creeper, sparsely pubescent. Stems purplish green where internodes thicken; nodes hairy, a few trichomes present on nodes. Leaves with veins on abaxial side dark purple; petiolate, petioles (11-)18-47 mm long; blade lanceolate (21-)46-78(-90) x (11-)18-37(-47) mm, apex usually acuminate, sometimes obtuse or emarginate; base hastate, margin entire. Flower bracts 13-23 x 8-20 mm. Calyx with unicellular trichomes and stipitate glands; lobes 1.3-4.7 mm long. Corolla with inner and outer surface of lobes and outer surface of tube white, tube dull yellow on inner surface; lobes 9-13 x 0.5-13 mm, tube 20-25 mm long, 2.5-8 mm in diameter. Filaments 4-6.5 mm long; anther thecae 3.5-3.7 mm long, spurs not strongly developed. Style 11-14 mm long. Fruit 22-25 mm long, globose base 8-10 mm in diameter; stalk 30-52 mm long. Seed reddish brown; some trichomes adhere to form comb-like protuberances; 4.5-7 mm in diameter.