BRITTON AND ROSE 



M. E. Eaton del. ^ moweTing ]omt oi Op7(ntia 5er£-eriana. 3. mowtring ioint oi Opzentia Soldi ng /in . 



2. Flowering joint of Opvntia elatior. 4, 5 Joints of Opuntia elata. 



(All natural size.) 



