BRITTON AND ROSE, VOL. Ill 
PLATE VIII 
1 . Top of flowering plant of Pediocactus simfisonii. 
2 . Flower of Denmoza rhodacantha. 
3 . Flowering plant of Ariocarfius kotschoubeyanus . 
4 . Top of flowering plant of Neoporteria subgibbosa. 
(All natural size.) 
sLIIoen & Co 
