3t>4 



GYMNOSPERMS 



THE SPOROPHYTE — VEGETATIVE 



The general appearance of the genus is sufficiently characteristic 

 to make it easily recognizable. Nearly all are straggling shrubs, 



'*?%■ 



Ik;. 3^$.— Ephedra trifiirca: female plant near Tucson, Arizona. The larger 

 branches at the surface of the ground, and even below it, arc 5 cm. in diameter. 



usually less than two meters in height, and some less than half that 

 height. Ephedra compacta, a very compact, profusely branching form, 



