24.0 



The Plant World. 



these plants arises some distance from the apex of the stem 

 and the flowering period does not teiTninate the existence 

 of the individual as in the agave. Sotol {Dasylir'wn wheeleri) 

 inhabits the rocky canyon slopes a thousand feet above the 



Fig 



The thistle poppy (.Argemuiie intermedia). 



level of Tucson although stragglers are found nearer. The 

 short heavy stems and the dense growth of long rapier-like 

 saw-edged ^eaves make this plant a noticeable one, especially 

 during June when the great shafts bearing numerous delicate 



