A Survey on Botanical Origins of Drug Tiannanxing Produced in Sichuan An Investigation on the Commercial Samples of Traditional Chinese Drug Lanceolate Dichotomous Starwort (Stellariae dichotoma L. var. lanceolata) Investigation on the Confusable Species of Traditional Chinese Drugs in Gansu Province and Studies on Their Quality(Ⅰ)——A Survey of Drugs Customarily Used in Gansu Province Studies on Botanical Origin of Commercial Samples of Traditional Chinese Drug Xixin (Herba Asari) A Survey on Botanical Origins of Drug Xue Lianhua Produced in China Macrological Identificaation of Original and Commercial Chinese Drug Gusuibu (Rhizoma Drynariae) Macrological Identification of Chinese Drug Dangshen (Radix Codonopsis)