468 “PHARMACEUTICAL BOTANY 
Fic. 352.—Ephedra sinica. A, entire plant. B, portion of a green aerial stem 
from A, enlarged; n, node bearing two opposite scale-leaves (/); i, internode. on 
fruiting branch showing terminal cone (f) and leaves (i). This species yields the 
commercial variety of Ephedra known in commerce as Tsaopen Mahuang and is 
gathered in Northern China. 
