BRITTON AND ROSE 



PLATE XXVI 



\ ft 



M. E. Kt. in 



Flowering joint of Ofwntia bcrg-ennna. 3. Flowering joint of Opunlia 



2. Flowering joint of Ofiuntia clatio,. 4, 5 Joints of Ofiitntia elala. 



(All natural size.) 



