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.
为茜草科植物柔毛金纳(纳)Cinchona pubescens Vahl (Cinchona succirubra Pavon)、白金纳C. calisaya (Weddell)、金纳C. ledgeriana (Moens ex Trimen)及其变种及杂交种的完整或切段的干燥。