Pharmacognostical Studies on Medicinal plant Caryopteris in Qiang Nationality District Pharmacognostical Studies on the Medicinal Parts of Panax quinquefolius L. Microscopic Identification of the Powder of Roots of Genus AdenophoraⅠ. The Roots of Sect.Basiphylae and Sect.Pachydiscus Microscopic Identification of the Powder of Roots of Genus Adenophora Ⅱ.The Roots of Sect. Remotiflorae and Sect. Adenophora