【来源】本品为麻黄科植物草麻黄Ephedra sinica Stapf 、中麻黄Ephedra intermedia Schrenk et C. A. Mey. 或木贼麻黄Ephedra equisetina Bge.的干燥草质茎。秋季采割绿色的草质茎，晒干。 【性状】 草麻黄：呈细长圆柱形，少分枝；直径1～2mm。有的带少量棕色木质茎。表面淡绿色至 ...

EPHEDRA is one of the three genera of the small Gymnospermous order Gnetaceæ, the two others being Gnetum and Welwitschia, that most curious of all gymnospermous plants. Ephedra is a type of ...