This species is widely distributed in the more northerly parts of South Asia, from the eastern foothills of the Himalayas in northern India and Bhutan, through Thailand, southern China, Vietnam and adjacent territories. It is quite common and not considered endangered. There is considerable floral and vegetative variation in the species, including differences in corolla shape and color, and in the length of the calyces.
Additional photos may be seen in a slideshow by clicking one of the links below:
- A stem with flower growing on a mossy tree trunk in Vietnam
- A close view of the flower
- Stems clambering across rocks at RBGE
- Flowers on the plant at RBGE
An antique print, published under the name Aeschynanthus maculatus, illustrates some variation in corolla color and calyces.