ANATOMIC STUDIES ON SIX SPECIES OF BUPLEURUM L. Discussion about range of nationalkey-protected wild medicinal materials Analysis on genetic diversity and genetic relationship of medicinal species in Dipsacus from China by SRAP Studies on the Medicinal Species of Bupleurum in Shanxi,Gansu,Ningxia,Qinghai and Xinjiang MORPHOLOGICAL STUDY OF LEAVES AND POLLENS ON MEDICINAL SPECIES OF GENUS ARALIA IN CHINA