Division of produce areas in Eucommia ulmoides Oliv.

Eucommia ulmoides Oliv is one of the rare Chinese medicinal herbs originated in China.Chinese medicinal herbs should be focused on genuine materials,because ecological environment of suitable distribution areas has effects on quality and effect of medicine materials.It is necessary to divide the produce areas for certify genuine materials,and the produce areas of Eucommia ulmoides Oliv.were divided into central produce area and main produce area.