BRITTON AND ROSE 



PLATE XXVIII 



" 



^' E. Eaton del. 



-1 



^■ 



^ - 



1. Flowering joint oiOpuniia laevis. 



Z. Flowering joint of Opuntia dillenii. 



I s 



r , _ ' 



L 1 



3. 



Upper part of flowering joiot of Opuntia aciculata. 



jjAll natural size.) 



I 



