Thunbergia alata is a species of flowering plant in the family Acanthaceae, native to Africa. It is a vigorous, evergreen or semi-evergreen twining climber growing to 2–8 m (6.6–26.2 ft) tall. The leaves are heart-shaped, 4–10 cm (1.6–3.9 in) long and 3–8 cm (1.2–3.1 in) broad, with a velvety texture. The flowers are trumpet-shaped, bright orange-yellow, 3–5 cm (1.2–2.0 in) in diameter, with a blackish-purple throat. It is a popular garden plant, with several cultivars available.