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Origin, phylogeny and dispersal of Quercus from China were discussed based on studies of phylogeny, fossil history and modern distribution of Quercus. According to Takhtajan's view point of regionlizatiton of world flora, a number of species in every region of world were counted as follows: Caribbean region with 134 species belonging to one subgenus and three sectitons (3/1), Indo-Chinese region 118(3/2) and east Asian region 97(3 / 2). Above regions are abundant in a number of species and can be considered as centres of majority. In conjunction with considering their phylogenetic relationships and fossil history Indo-Chinese region would be however centre of distribution and speciation and could be original place of Quercus. Original time of Quercus was suggested in early Plaeogene based on fossil history of Quercus. Trigonobalanus has been recognized as probable ancestor of Quercus. After emergence of Quercus on earth, two large groups, subg. Cyclobalanopsis and subg. Quercus were first derived. Subg. Cyclobalanopsis mainly developed and dispersed insoutheasten Asian. They dispersed not beyoned the line of Wallace to southeast and reached line of Qinling moutain to Huaihe river forward to north. Two groups were evolved, sect. Brachylepides and sect. Engleriana, after emergence of subg. Quercus. Sect. Brachylepides, oldest group in subg. Quercus, mixed in broad evergreen forest at first and then developed and becomed dominant in Hengduan Mountain with Tethys withdrawing and Himalayas rising since Miocene because of adapted to dry enviroment. Deciduous oaks could be evolved from sect. Echinolepides via sect. Engleriana and then two sections, sect. Quercus and sect. Aegilops, were derived. These sections dispersed in North Temperate, reaching 62 degrees north latitude in northwesten Europa and 52 degrees north latitude in northeast. Deciduous oaks dispersed to subtropical area and tropical mountains when glacier came and climate became cold in earth. Oaks dispersed to North America by two routes: 1) from Tethyan region migrating across middle Atlantic before late Eocene, this group could be sect. Protobalanus, evolving from sect. Brachylepides via Q.ilex.This section is held to be primitive among American oaks; 2) across Asia-Bering land bridge after Miocene. Sect. Quercus could take this route. In short Quercus was evolved from Trigonobalanus in tropic mountains of Indo-Chinese region in early Paleocene and then dispersed to other areas from this region.