Thunbergia amoena C.B.Clarke

Creeper with a densely pubescent, velvet appearance. Leaves petiolate, petioles (8-)12-48(-65) mm long; blade ovate, (31-)40-64(-79) x (28-)36-62(-76) mm, apex acute to obtuse, base cordate, margin entire or toothed. Flower bracts persistent; 14-20 x 10-20 mm. Calyx covered with short stipitate and pin-like glands; lobes 3-6 mm long. Corolla with inner and outer surface of lobes and outer surface of tube lemon yellow, inner surface of tube dull yellow; lobes 10-16 x 14-17 mm, tube 19-29 mm long and 2-10 mm in diameter. Filaments 5-6 mm long, anther thecae 2.5-3.2 mm long. Style 1.4-13 mm long; unicellular trichomes present on upper part. Fruit 16-18 mm long, globose base 6-7 mm in diameter; stalk 16-24 mm long. Seed brown; trichomes adhere to form ridges on surface; 3-5 mm in diameter.