£.NEVADENS/S 
FicurE 1.—Jcintfir (Ephedra), a peculiar, virtually leafless genus of shrubs of south- 
western and Great Basin deserts, whose green stems are cropped by livestock: A, 
Spray of Hphedra viridis, with staminate (male) inflorescence; B. spray of £. 
torreyana; C, twig and pistillate (female) fiower of H. torreyana; D, pistillate 
(female or fertile) spray of H. nevadensis 
(fig. 1, B, C) and £. trifurca both are grazed, particularly by cattle 
in winter; the latter, a rather small bush 2 feet high, is held by the 
Mexicans in high repute as a drug plant (79). 
IMPORTANT WESTERN BROWSE PLANTS 13 
