This type of ordinary grow high about 1 to 7 meters. The physical characteristics of simple leaves are oval and are arranged with opposite pairs along the length of the stalk.
The petals in one flower stalk are usually 6-8 and the crown tube can be up to 3 cm long.
Habitat growth can be found in shrubs or mixed forest. This plant is very fond of full sunlight.
This type is usually spread in India, China, Myanmar, Vietnam, Malaysia, Indonesia to northern Australia.