BRITTON AND ROSE 



M. E. Eaton del. 



1. Leafy branch of Opuntia iinbricata. 3, 4. Forms of Opuntia alcahes. 



2. V\o-^^iva.g\ii2LXiQ)a.Qi Opimtia prolifera. 5,6. Opuntia vestita . 



(All natural size.) 



