Strychnos wallichiana
English: Tropical Bindweed.
Name: Strychnos gaultheriana, Hoang-nan.
Region: east Asia, southern China, India, Sri Lanka, Bangladesh, Laos, Vietnam, Indonesia.
Habitat: tropical evergreen forests, mixed woodlands on limestone; at elevations from 200 - 600 metres.
Content: alkaloids brucine 2.81%, strychnine 2.4%.
Use: medicinal.
Botany
Robust climbing shrub; poisonous; climb by means of tendrils and hooks.
Stems up to 20 metres long.