Circular No. 66, U. S. Dept. of Agriculture 



Plate 3 



A. — Neomammillaria magnimamma (Mammillaria centricirrha) . B .— Neomammillaria compressa 

 (Mammillaria cirrhifera). C. — Neomammillaria (Mammillaria) carnea. D. — Neomammillaria 



mystax (Mammillaria mutabilis) 



