A twining vine growing to 3-6 m high when given suitable climbing support in trees, with thin stems. Leaves are evergreen, lanceolate, 5-10 cm long and 1-1.5 cm broad, and lustrous, dark green. Flowers are borne in clusters, the individual flowers yellow, sometimes with an orange center, trumpet-shaped, 3 cm long and 2.5-3 cm broad.

Analgesic, anticholinesterase, antipyretic, antispasmodic, antidote, bronchodilator, CNS depressant, diaphoretic, hypotensive, mydriatic, nervine, respirasedative, sedative, tonic and vasodilator (root).

Wikipedia
Plants For A Future

The roots are used against asthma, biliousness and cancer, for easing childbirth, for chorea, convulsions, cough, cramp, croup, cystosis, dysmenorrhea, dyspnea, dysuria, enterosis, epilepsy, fever, flu, gastrosis, gonorrhea, hangover, headache, heart diseases, heartburn, high blood pressure, hyperemia, hysteria, induration, insomnia, itch, malaria, migraine, myocardosis, nervousness, neuralgia, neurodermatosis, neurodystrophy, neurosis, oliguria, pain, pertussis, pleurisy, pneumonia, polio, rheumatism, sarcoma, sniffle, spasm, stomachache, toothache, trigeminosis, typhoid, veneral diseases and wen.

Should not be used for patients with cardiac weakness, hypotension or myasthenia gravis.

James A Duke and Maryl Fulton. Handbook of Medicinal Herbs - 2nd Edition, P:804-805, CRC Press July 2002.