Mangosteen clone survey in Eastern Region of Thailand as Rayong, Chanthaburi and Trat Province in 2008 and 2009 showed diferential morphology as mangosteen phenotype was different and could be distinguished in 6 characters i.e small leave and small fruits trees, oblong shape trees, thin (not prominent) persistent stigma lobe thickness fruit trees, full and partial variegated mature leave color (combination of green and white color) trees, oblong shape leave trees and greenish yellow mature fruit color trees. Generally, rather short shoot, elliptic leaf blade shape, undulate leaf blade margin and thin or cavitied persistent stigma lobe thickness fruits are dominant marker of full seedless fruits that rarely found trees. Survey of mid-sized mangosteen orchards (200-300 trees) showed that over 70% full seedless fruits trees could be found only about 1-3% of all trees.