and shape from the base to the top of the plant. Both the stems 

 and the leaves are inclined to be hairy or woolly when young, but 

 later lose the hairs (become glabrous). The greenish, leaflike 

 bracts (phyllaries) that encircle the flower head are in two rows 

 and, at maturity, curve outward at their tips, a characteristic which 

 has given rise to a Navaho name for the plant, meaning owl's 

 claws. 



