Abstract:The results of herbal textural research showed that the original plants of Xuancaogen in ancient times were Hemerocallis fulva, H. fulva var. kwanso, H. citrina, H. lilio-asphodelus and H. minor. The cause of confusion about Xuancao, Lilu and Lucong was discriminated. The crroneous scientific names of Beihuanghuacai and Shexiangcao in contemporary literature were corrected, A suggestion that H. aurentiaca be supplemented as an independent specise was raised.