Botanical name - Aeschynomene indica Common names - Indian joint vetch ; Budda pea Tamil names – Chatai , Kitai , kitaichchi , Netti . Considered as weed ;Grows in disturbed habitat; Nodes are full of , nitrogen-fixing bacteria ; Green manure; Not recommended to animals ; Pithy stems are used as floats for fishing nets;Charcoal is made into gunpowder. In picture - Yellow flowers and stems of Indian joint vetch .PD-self