1 



-i- 



BRITTON AND ROSE 



PUTE XXXllI 



x 



4 



M, E. Eaton 



i> MOt» Ik £4 



L 1 



-I ^ 



1. Upper part of joint of Opuntia tomenlosa. 



2 3. Flowering joint and branch of Opuntia brasilicns is. 



4. 



Grusonia 



(All natural size.) 



■^ c ^ 



