Each pod usually has 3-5 hairy joints. Each joint contains one seed. This creeping is common in grassy places, lawns and sandy places, sometimes by the sea. This prickly plant is one of the most well known common plants in Singapore. It was introduced from South America.
Leaves are compound.
Each of the 4 branches of the leaf has 12 - 20 pairs of small oblong leaflets. When touched, it rapidly folds its leaflets together and the whole leaf droops down. Flowers are pinkish and small. They are gathered into heads at the end of long stalks. Each flower has many stamens.