Definition: Whole or cut, dried bark of Cinchona pubescens Vahl (Cinchona succirubra Pavon), of C. calisaya (Weddell), of C. ledgeriana (Moens ex Trimen) or of its varieties or hybrids.

• 本品为茜草科植物柔毛金鸡纳（鸡纳树）Cinchona pubescens Vahl (Cinchona succirubra Pavon)、白金鸡纳树C.；calisaya (Weddell)、金鸡纳树C