BRITTON AND ROSE, VOL. IV PLATE XV 
M. E. Eaton del, ‘ r : ‘ a em 
1. Flowering plant of Neomammillaria bombycina. 4. Flowering plant of Neomammillaria armillata. 
2. Flowering plant of Meomammillaria armillata. 5. Flowering plant of Neomammillaria goodridgei. 
3. Top of flowering plant of Neomammitllaria armillata. 
