A floristic study on the seed plants from the Yiwul Mountains of Liaoning Province

There are about 718 species of wild seed plants in the Yiwulu Mountains, belonging to 94 families and 362 genera. According to their present distribution, the species can be classified into 23 areal-types and 20 subtypes. The flora is temperate in nature, but it had some connection with tropical flora historically. It has the wide connection in geographical relationships. It is closely related with elements of E.Asia (especially with one of Japan) and secondly with North temperate elements. The principal part of the flora is composed of them.