The Gymnospermous Flora of Hainan Island has only 6 families

8 genera

19spieces (excluding cultivated).According to area of the Genera

six types arerecognized:The Subtropic-temperate of the Northern Hemisphere

East Asia(Cathaysia)

Tropical Asia-Australia-Madagscar

Pantropic-Subtropic

TropicalAsia-Australia

and East Asia(Cathaysia)-North America.This shows that theCathaysian Flora is related to the neighbouring regions and all of the continen-ts Flora.According to area of species distributions

the geographical componentsof Hainan Island Gymnosperms are not complex.They consist mainly of Tropic-Subtropic elements or Tropic-Subtropic high mountain elements

including OldWorld Tropic species 5%

Asia Tropical species 22%

Tropic-Subtropic highmountain species 69%

Tropical ravine species 10%.Gymnospermous Flora ofHainan Island exhibits much closer relationships with the Flora of its neighbou-ring regions—Guangdong

Guangxi

Yunnan

Fujian

Indo-China

Malaysia andPhilippine

species exchanges among them in past geological times.The Flora of Hainan Island Gymnosperms was chiefly influenced by the Ca-thaysian Flora.So far as Africa

South America and North America concernsthey are not a common species.These continental Flora were not much influen-ced to the Gymnospermous Flora of Hainan Island.From analysis for the Gymnospermous Flora of Hainan Island

we could reco-gnize that Cathaysian ancient land was probably the cradle of Gymnosperms

some of them is still growing

the others were migrated to Africa

South Ameri-ca

Europe

North America and Australia.