Advances in studies on quality control of Corydalis yanhusuo Studies on the Microscopical Structures of Eight Species Chinese Medicine from Rumex Root Identification of Euphorbia humifusa Wind.and E maculata Raf.from its Confused Species E.thymifolia L. Study on the Micro-identification of Insect Material Medicine Study on identification of wild and cultirated Radix Scutellariae in different growing years Advances in studies on quality control of Corydalis yanhusuo