BRITTON AND ROSE, VOL 



PLATE VIII 



M E. Eaton del. 



1 . Top of flowering stem of Cephalocereus brooksianus. 3. Top of stem of Cephalocereus phaeacanthus . 



2. Top of stem of Cephalocereus caiingicola. 4. Flowering branch of Lepiocereus assurgens. 



(Natural size.) 



