小通草的生药来源,《中国药典》规定为旌节花科植物喜马山旌节花(Stachyurus himalaicus Hook. f. et Thoms. )、中国旌节花(S. chinensis Franch. )或山茱萸科植物青荚叶(Helwingia japonica(Thunb.) Dietr.)这3种植物的茎髓。神农架小通草药物种类丰富,蕴藏量大,但小通草商品原植物也较复杂混乱,有时在同一商品中有数种不同的来源。为摸清我区小通草的资源及药用情况,为生产、临 The source of crude drug of Xiaotongcao is prescribed by the Chinese Pharmacopoeia as Stachyurus himalaicus Hook. f. et Thoms., S. chinensis Franch. or Hawthorne. Helwingia japonica (Thunb.) Dietr.) The stem of the three plants. Shennongjia Xiaotongcao has a rich variety of drugs and a large amount of reserves. However, the original plants of Xiaotongcao are also more complicated and chaotic. Sometimes there are several different sources in the same commodity. To find out the resources and medicinal conditions of Xiaotongcao in our district,