Clematis chinensis/ Radix Clematidis

It refers to the dried root or ratten of Clematis chinensis Osbeck, Clematis hexapetala Pall., and Clematis manshurica Rupr.. It is distributed inChina,Vietnam, theRyukyu Islandsand other places. It has the effects of dispelling rheumatism, relieving rigidity for muscles and activating collateral. It is used in treating rheumatism, numbness in limbs, muscle spasm and difficulty in flexion and extension.