THE CACTACEAE 
DESCRIPTIONS AND ILLUSTRATIONS OF 
PLANTS OF THE CACTUS FAMILY 
BY 
: N.'L. BRITTON, anv J. Nv ROSE 
VoLuME III , 
/ 
| VRI_BOT 
Tue Carneci£ INstiruTION or WASHINGTON : é EL cely 
Wasuincron, 1922 (Ter 
| FFR 1 19: 
