What tree of the genus "Durio" is the ONLY one available in the international market?
Durian The durian ( ) or is the fruit of several tree species belonging to the genus Durio. The name "durian" is derived from the Malay languages word for duri or "spike", a reference to the numerous spike protuberances of the fruit, together with the noun-building suffix -an. There are 30 recognised "Durio" species, at least nine of which produce edible fruit, and over 300 named varieties in Thailand and 100 in Malaysia. "Durio zibethinus" is the only species available in the international market: all other species are sold only in their local regions. There are hundreds of durian cultivars; many consumers express preferences for specific cultivars, which fetch higher prices in the market.
Manilkara hexandra Manilkara hexandra is a tree species in the tribe Sapoteae, in the Sapotaceae family. It is native to much of south Asia (China: Hainan and southern Guangxi provinces; the Indian Subcontinent: Bangladesh, India, and Sri Lanka; Indo-China: Cambodia, Myanmar, Thailand and Vietnam. Its vernacular names vary regionally; for example "Palu", "Palai" or "Rayan" (පලු) in Sinhalese. It is locally known as the Khirni tree in parts of Bangladesh and India. In the Tamizh language it is called "Ulakkaippaalai" or "Kanuppaalai."