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.
本为茜草科植物柔毛(树)Cinchona pubescens Vahl (Cinchona succirubra Pavon)、白树C. calisaya (Weddell)、树C. ledgeriana (Moens ex Trimen)及其变及杂交完整或切段干燥树皮。