Bengal Madder (敖 Hsi ts‘)
A creeping perennial plant which grows mainly in China and India, and which loves the dampness that is found in thick undergrowth and in the jungles. Only the roots are used medicinally, for they contain rubianic acid, which is soluble in hot water. Whilst it is quite bitter to the taste it does have excellent cooling properties. Because of this, it has been found to be extremely useful in the fight against rheumatoid arthritis, abdominal pains and jaundice, because it quickly reduces internal inflammation.