BRITTON AND ROSE 



PLATE XI 



^' E. Eaton del 



^ MO£?1 ft QQ 



1. Leafy branch of Opuntia imbricata. 



2. Flo 



opuntia prolift 



(All nat 



size 



3, 4 

 5,6 



.) 



Forms of Opuntia alcahes. 

 Opuntia vestita . 



