Cassia fistula
 Cassia fistula known as the golden shower tree and by other names is a flowering plant in the family Fabaceae. The species is native to the Indian subcontinent and adjacent regions of Southeast Asia. It ranges from southern Pakistan eastward throughout India to Myanmar and Thailand and south to Sri Lanka. It is closely associated with the Mullai region of Sangam landscape. It is the national tree of Thailand and its flower is Thailand's national flower.