794 



THE BOOK OF GARDENING. 



attains a good size and is a free blossomer; it bears yellow 

 flowers and long powerful - hooked spines. E. concinnus 

 (Fig. 529) is a rather small globular species, having yellow 



Fig. 529. — Echinocactus concinnus. 



flowers which are often as large as the plant itself, and 

 occasionally several appear together on the same stem. 

 E. coptonogonus is wavy- ribbed and globular, while the flowers are 

 rayed' white and striped purple. E. cornigerus is noted for its 

 strong spines, which are purple ; the stem is waxy, ribbed, and 

 grey - green ; it is a free blossomer with deep red flowers. 

 E. crispatus is very short and neat ; the flowers are white, 

 with a purple stripe. E. Emoryi is very striking ; the 

 hooked spines are of remarkable size, and are borne at the 

 ends of the tubercles ; the flowers are red and yellow. 

 E. myriostigma (Bishop's Hood) is also remarkable ; it has no 



