118 CACTUS CULTURE FOR AMATEURS. 



may be made to form a compact shrub, and when in flower or 

 fruit it is very ornamental. 



Fig. 62. Opuntia Tuna. 

 O. Tuna. 



Stein erect, flat- jointed, robust-growing, sometimes 20 feet high. 

 Joints ovate, 4 to 9 inches long, with cushions 1 inch apart, com- 

 posed of short, fulvous bristles, and several long, needle-shaped, 



