P1.32. 
CACTACEA, 
BOUNDARY 
MEXICAN 
STATES é& 
UNTTED 
‘ A 
j \ i og 
pea snenes 
Davesne sc. 
P.Roetter del. 
1-5 ECHINOCACTUS HORIZONTHALONIUS 
6-7 ECHINOCACTUS PARRY! 
