Origin and description study for Rhizoma Dioscoreae Bulbiferae unregistered in official documents

In order to build up the infrastructure of the globalization of herbal material, the system of culture, distribution, treatment and sale should be established on the basis of the official documents. In this context, the state compendium needs to be theoretically established in perfection 0in order that it may be globally authoritative. The ultimate goal of this study is to clarify the origin and description of the herbal material unregistered in the official documents, as well as to establish the criteria of assessment. The technical books on herbage, published in the country and other countries, were compared with each other. Also, on-the-spot surveys were made to learn specialists' know-how. The description of the collected drug-stuffs Were analyzed in connection with external morphology, internal morphology and microscopy. And the laboratory test was performed to differentiate such drug-stuffs.