UNITED STATES & MEXICAN BOUNDARY CACTACES 
i ! 
| | 
| 
j 
} 
| 
| 
| is ‘ NH ( M/) Whi , | 
Gow | 
J A 7 
| | 
} 
1 
j 
| 
| 
| 
| 
| 
5 
er ey ee ee ee Dougal sc. 
PRoetter del. 
1-—-4 CEREUS EMORY! 5 —6 CEREUS VARIABILIS 
’ 
