Abstract

1. The total number of species and varieties of the Chinese Woody plants studied is 4073, which belong to 65 families, and 230 genera, 4 of which are new families, 31 are new genera, and 2396 are new species and 429 are new varieties discovered and redetermined during the recent 28 years. 2. According to the statistical results of studies of the prevalent numbers of species and varieties distributed in different regions and the special characteristics of trees and shrubs in each region, eight tentative forest type-regions have been recognized. 3. Out of 65 families, 45 families containing above 10 species and varieties each，and with trees of above 10 meters high have been tabulated, and the percentages of trees and shrubs in each family has been calculated. 4. Out of the total of 3953 species and varieties of large trees, 187 are conifers and 3765 are hardwoods. 5. The distributional characteristics show that 35 species and varieties are endemic to different special localities, 47 being limited to the south of the Yangtze River, 28 to the north of the Yangtze River, and 20 distributed throughout the whole country as cosmopolitan forms. 6. The distribution of the forest floral regions of China and that of the more accurate divisions, require further study on the different c1imatic, edaphic, and biotic factors of the different regions in order to correlate them with the forest conditions. For the time being eight forest type regions have been tentatively recognized.