This plant is a spreading herb or ground cover, reaching 60 cm or up to 1 m in height if supported. The flower is small, 1/2-5/8 in. Widespread throughout the Old World Tropics, and introduced into tropical Americas and Hawaii, where it has become naturalized. In some parts of Africa, the leaves are eaten as a vegetable and used as an herbal remedy in traditional African medicine for the management of asthma.
The above is the white-greenish bloom variety.
It is also used as an ornamental plant and an important plant for honeybees, butterflies and other insects.