BRITTON AND ROSE 



PLATE XVIII 



M. E. Eaton del. 1 to 3 

 H. A. Wood de). 4, 5 



1. Two plants of Ofntntia drummondii. 3 Joints of Opiintia triacaniha. 



2. Joints of Opiintia retrorsa with flower. 4, 5. Joint and section of fruit of Opuntiajamaicensis. 



(All natural size.) 



