BRITTON AND ROSE 



PLATE XXXII 



M. E. Eaton del. 



1. Upper part of flowering joint of 0/>z<«^za /i?//(7f«r/a. 3. Flowering ioint oi Opiintia vehiiina. 



2. Fruit of the same. 4. Upper part of joint of Opuntia megacayitha . 



(All natural size.) 



