52 CACTUS CULTURE FOR AMATUHb 



the spiny covering of E. Echidne seems to support such a vi3^. 

 Flowers of medium size, bright yellow, produced two or three 

 together in summer. Mexico. It thrives in a greenhouse where 

 frost is excluded, but rarely flowers under cultivation. 



E. Emoryi. 



Stem large, examples having been found 3 feet in height and 

 and about 2 feet in diameter. Average plants have globose stems 

 1 foot through, with about thirteen ribs, the ribs tuberculated, the 



Pig. 22. Flower and Spines of Echinocactus Emoryi. 



tubercles large, and rounded ; spines in star-shaped bundles of eight 

 or nine, often Hat on the top side, articulated, with hooked points, 

 varying in length from I inch to 4 inches. Flowers .3 inches long ; 

 petals red, with yellowish margins, spreading so as to form a beautiful, 

 large cup, with a cluster of yellow stamens in the oentre. Lower 



