Microscopic identification study of western herbs. Part I: Three Echinacea-species roots / 中国中药杂志

<p><b>OBJECTIVE</b>To make microscopic identification research of three Echinacea-species roots recorded in the United States Pharmacopeia.</p><p><b>METHOD</b>The root transverse section and powder of E. angustifolia, E. pallida, and E. purpurea were observed. The main microscopic features were photographed.</p><p><b>RESULT</b>The main microscopic features of transverse section and powder in three Echinacea-species roots are basically similar, except for some diagnostic differences. The results provide reliable reference for the authentication of raw materials of western herbal studies.</p>