Carica Papaya is commonly referred to just Papaya.  While often considered a tree the carica papaya is actually a plant that can grow upto 25 feet tall.  It has leaves that can be up to two feet across and bears fruit.  The fruit are elongated up to 20 inches long with thick yellow or orange flesh that contain many seeds.  The seeds are black. 

The Carica Papaya tree orininated in southern Mexico, Central America and parts of South America.  It is not cultivated in many countries that have tropical climates such as the Philippines, Sri Lanka, India, Brazil and South Africa.