Dioscorea bulbifera (commonly known as the air potato, air yam, bitter yam, cheeky yam, potato yam) is a species of true yam in the yam family, Dioscoreaceae. It is native to Africa, Southern Asia, India, Sri Lanka, In Sinhalese it's called Guvan Arthaapal. Maldives, In Dhivehi it's called Mathivah, China, Japan, the Philippines, and Indonesia and northern Australia. It is widely cultivated and has escaped to become naturalized in many regions (Lat