Carduaceae 319 



toward the summit. Heads in a compact 

 capitate cluster, J an inch or more in di- 

 ameter, woolly at the base ; involucral bracts 

 very narrow, acute, thin, and translucent, 

 straw-colour, the outer ones densely woolly 

 and occasionally rosy. 



In dry ground and on slopes, frequent in 

 the Rockies at the lower altitudes. 



Plant silvery throughout, freely 



Antennana 



parvifolia spreading; stems prostrate and 



Nutt. leafy, forming mats of con- 



Mountam siderable extent ; flowering stems 

 2-8 inches high. Leaves from 

 obovate to spatulate, J an inch or less long 

 persistently white-woolly. Heads in compact 

 terminal clusters about J of an inch broad; 

 involucral bracts, lanceolate, obtuse, thin 

 and translucent, yellowish. 



In dry sterile ground at the lower alti- 

 tudes throughout the Rockies; flowering in 

 June, frequently growing with the next 

 species which it closely resembles in man- 

 ner of growth. 



